diff --git a/tests/data/L3.989_T0.28_TcR1_TcW1_gamma1e-06_r0_ns7.dat b/tests/data/L3.989_T0.28_TcR1_TcW1_gamma1e-06_r0_ns7.dat
new file mode 100644
index 0000000000000000000000000000000000000000..e995122568561c79f8575324453c2ecfebe81a95
--- /dev/null
+++ b/tests/data/L3.989_T0.28_TcR1_TcW1_gamma1e-06_r0_ns7.dat
@@ -0,0 +1,176 @@
+# Comparison data from code used in
+# Phys. Rev. Applied 6, 054002 (2016)
+# L3.989_T0.28_TcR1_TcW1_gamma1e-06_r0_ns7.npz
+# phi    I_S [E_0/L_0]
+0.000000000000000000e+00 0.000000000000000000e+00
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diff --git a/tests/data/L3.989_T0.53_TcR1_TcW1_gamma1e-06_r0_ns7.dat b/tests/data/L3.989_T0.53_TcR1_TcW1_gamma1e-06_r0_ns7.dat
new file mode 100644
index 0000000000000000000000000000000000000000..d998f792a99c0b7df8dbd1326b65aaaa594bab79
--- /dev/null
+++ b/tests/data/L3.989_T0.53_TcR1_TcW1_gamma1e-06_r0_ns7.dat
@@ -0,0 +1,142 @@
+# Comparison data from code used in
+# Phys. Rev. Applied 6, 054002 (2016)
+# L3.989_T0.53_TcR1_TcW1_gamma1e-06_r0_ns7.npz
+# phi    I_S [E_0/L_0]
+0.000000000000000000e+00 0.000000000000000000e+00
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+2.939227706268745077e+00 1.272526763054185217e+00
+2.969147579464994635e+00 1.271486035496312672e+00
+2.998777518427196753e+00 1.269670148843424773e+00
+3.028085845467268555e+00 1.266605977900883362e+00
+3.057675685183198322e+00 1.261564327773843974e+00
+3.086997695459969826e+00 1.256390897334647816e+00
+3.115811326563648009e+00 1.250362386035627882e+00
+3.144261138568462233e+00 1.243721843036611041e+00
+3.172079029947551199e+00 1.235116281955293882e+00
+3.199620884323580938e+00 1.225663789281992822e+00
+3.227001851101578112e+00 1.212741291808446586e+00
+3.253740478557924920e+00 1.199386312211877970e+00
+3.279513471510598244e+00 1.184687494572400190e+00
+3.304328103723404020e+00 1.168395864548701368e+00
+3.328074172742066850e+00 1.149887782840245842e+00
+3.350671141263679154e+00 1.127689542907953424e+00
+3.371951376356390639e+00 1.104050525577318753e+00
+3.391314977433533606e+00 1.077841052063739591e+00
+3.408613016286809572e+00 1.048857556262108748e+00
+3.423100912216205494e+00 1.015881444930725186e+00
+3.435248154990028890e+00 9.805524663567202204e-01
+3.443997991537665726e+00 9.415565595843671254e-01
+3.449557796272635368e+00 9.000925532531448559e-01
+3.451166846620743911e+00 8.554980160187451999e-01
+3.449184181612219291e+00 8.088429151766333147e-01
+3.443784780497899600e+00 7.604649014155498987e-01
+3.435127433685204235e+00 7.108137036029933409e-01
+3.423659620616788857e+00 6.603500675075909543e-01
+3.409636075507320729e+00 6.094275206732359118e-01
+3.393392210709691881e+00 5.582660825736311949e-01
+3.375364225007992047e+00 5.070112701572920821e-01
+3.355793886878282173e+00 4.557962109462954658e-01
+3.334938567059857473e+00 4.047210565256264547e-01
+3.312864761720412332e+00 3.535962749509804492e-01
+3.289676446330001447e+00 3.023797517005288316e-01
+3.265798584112666880e+00 2.513737892521191730e-01
+3.241473103772253062e+00 2.005214577209199212e-01
+3.216611029186470017e+00 1.497061554461158184e-01
+3.191358827468534720e+00 9.891732490168429759e-02
+3.165905560529945095e+00 4.821414822289173813e-02
+3.140660805888255247e+00 -2.498303795330095948e-03
+3.141592653589793116e+00 2.587531401246296291e-17
diff --git a/tests/data/L3.989_T0.8_TcR1_TcW1_gamma1e-06_r0_ns7.dat b/tests/data/L3.989_T0.8_TcR1_TcW1_gamma1e-06_r0_ns7.dat
new file mode 100644
index 0000000000000000000000000000000000000000..2992df458c1649b156e0e43ac1cdc731f27cb9df
--- /dev/null
+++ b/tests/data/L3.989_T0.8_TcR1_TcW1_gamma1e-06_r0_ns7.dat
@@ -0,0 +1,96 @@
+# Comparison data from code used in
+# Phys. Rev. Applied 6, 054002 (2016)
+# L3.989_T0.8_TcR1_TcW1_gamma1e-06_r0_ns7.npz
+# phi    I_S [E_0/L_0]
+0.000000000000000000e+00 0.000000000000000000e+00
+7.853981633974482790e-02 2.522325205035909693e-02
+1.165795244902722572e-01 3.743749331259865060e-02
+1.548844299701123695e-01 4.971984652215858530e-02
+1.932991333716645443e-01 6.200915847570646205e-02
+2.318470135875512483e-01 7.430650128786481234e-02
+2.704082055893146097e-01 8.657175965942694174e-02
+3.089626764695524441e-01 9.879138999603843951e-02
+3.474939738743860196e-01 1.109530507146024442e-01
+3.860219938114563543e-01 1.230570403559644449e-01
+4.245594223419726920e-01 1.351013709452499323e-01
+4.631175994394403639e-01 1.470832004523200121e-01
+5.016966483479674555e-01 1.589962793085104298e-01
+5.402950390173283379e-01 1.708334607121218263e-01
+5.789101022391326401e-01 1.825871225208636206e-01
+6.175419221394462532e-01 1.942503868901598318e-01
+6.561916999232120240e-01 2.058168039595380250e-01
+6.948614328615518865e-01 2.172800995335975316e-01
+7.335526849241695846e-01 2.286337676993466239e-01
+7.722665996692213985e-01 2.398710152788997019e-01
+8.110039245133447983e-01 2.509847907850101256e-01
+8.497653303067036479e-01 2.619678799575564376e-01
+8.885514968659723456e-01 2.728129424897331456e-01
+9.273631466887009012e-01 2.835125104698420495e-01
+9.662009707634521272e-01 2.940589555027509627e-01
+1.005065582226249532e+00 3.044444589730328499e-01
+1.043957481281627686e+00 3.146609908949357659e-01
+1.082877053600308948e+00 3.247002985661642249e-01
+1.121850882178004660e+00 3.345125067214207437e-01
+1.160832473233613937e+00 3.441991249982565559e-01
+1.199855195717963063e+00 3.536331009394728664e-01
+1.238902204948375996e+00 3.628626559785321781e-01
+1.277976891129287917e+00 3.718854587517547161e-01
+1.317072536773905345e+00 3.806747152641176690e-01
+1.356192072122335057e+00 3.892186882686283211e-01
+1.395338848456819880e+00 3.975093701447661165e-01
+1.434512379393455550e+00 4.055368417235103440e-01
+1.473709361472562929e+00 4.132894044607974826e-01
+1.512966283132707090e+00 4.207026276176500379e-01
+1.552205512406185317e+00 4.279641582184169901e-01
+1.591412975247902928e+00 4.348943284008467414e-01
+1.630623617605277298e+00 4.414373682192225812e-01
+1.669864112816414892e+00 4.476150870797947490e-01
+1.709189512421936064e+00 4.533500044656829653e-01
+1.748513714908634720e+00 4.588590699021742325e-01
+1.787799047747681946e+00 4.640067182571725457e-01
+1.827038690929087883e+00 4.687267396007047116e-01
+1.866250768340999677e+00 4.730071245368271393e-01
+1.905453900527066313e+00 4.768411937968169423e-01
+1.944643429905851484e+00 4.802211006034217133e-01
+1.983803416294359856e+00 4.831303357682213973e-01
+2.022911782266524128e+00 4.855464077082702334e-01
+2.061950435521732850e+00 4.874470996765079001e-01
+2.100904041052509719e+00 4.888103401847856411e-01
+2.139758525510593312e+00 4.896132468922995140e-01
+2.178497878246013819e+00 4.898307272681463043e-01
+2.217103045094292124e+00 4.894361067023750844e-01
+2.255551477998976484e+00 4.884016974966424174e-01
+2.293817214489081824e+00 4.866992229337402387e-01
+2.331870893891457186e+00 4.842997945507220847e-01
+2.369679667181393334e+00 4.811737315275115279e-01
+2.407206978227503402e+00 4.772904222939294283e-01
+2.444412269795201542e+00 4.726183633146049945e-01
+2.481250651765106952e+00 4.671253805622457844e-01
+2.517672585015320763e+00 4.607789960787666561e-01
+2.553623640631569103e+00 4.535469018191760626e-01
+2.589044395257002140e+00 4.453975259557587107e-01
+2.623870518261762985e+00 4.363007009640322287e-01
+2.658033106564579917e+00 4.262284581830163566e-01
+2.691459328860142275e+00 4.151559706684909146e-01
+2.724073445074659094e+00 4.030626417221411795e-01
+2.755798254916803192e+00 3.899332938260355319e-01
+2.786556993779345071e+00 3.757593664174168069e-01
+2.816275639969099132e+00 3.605400021165964253e-01
+2.844885542133346323e+00 3.442829068112215340e-01
+2.872326238279319099e+00 3.270049086156182061e-01
+2.898548322298821756e+00 3.087321912894755993e-01
+2.923516205339319551e+00 2.895002083882101118e-01
+2.947210605370584879e+00 2.693532872438430537e-01
+2.969630605614451468e+00 2.483439406726856702e-01
+2.990795209157892209e+00 2.265319622560592050e-01
+3.010744443820803529e+00 2.039834469706430509e-01
+3.029540057423966815e+00 1.807698405665038033e-01
+3.047265636804843414e+00 1.569669854560842848e-01
+3.064025829532929013e+00 1.326540621817784427e-01
+3.079944482338742517e+00 1.079124163426675026e-01
+3.095352684457425507e+00 8.291260021245186462e-02
+3.110066497285942866e+00 5.759107152083747100e-02
+3.124278784636340678e+00 3.203171377261204017e-02
+3.138256149994118172e+00 6.361421269919288225e-03
+3.152230859976393962e+00 -1.930748641679913905e-02
+3.141592653589793116e+00 6.731980708099301576e-18
diff --git a/tests/data/kupriyanov1981-cpr-a1.dat b/tests/data/kupriyanov1981-cpr-a1.dat
new file mode 100644
index 0000000000000000000000000000000000000000..d6cbb7093df9ed11238df247824d0fec3ab9676d
--- /dev/null
+++ b/tests/data/kupriyanov1981-cpr-a1.dat
@@ -0,0 +1,51 @@
+# Data from Kupriyanov & Lukichev, Fiz. Nizk. Temp. (1981)
+# phi I_S [Delta/R]
+0.00840903855016  0
+0.159410197356  0.286779843065
+0.444701559378  0.79667887085
+0.788856191251  1.35133130735
+1.32620446676  2.15477859849
+1.7714282435  2.70984020902
+2.42687798399  3.42473542211
+2.69592704703  3.64840017219
+3.02390633086  3.88502209966
+3.29314285655  4.019657402
+3.50358306332  4.07774306429
+3.61304785655  4.09090482868
+3.70576152362  4.05948367353
+3.78169728416  3.99619809137
+3.84086852835  3.89468883594
+3.86630988702  3.81212092797
+3.8833957679  3.69772269083
+3.89200565928  3.60872734092
+3.88381086375  3.50058605654
+3.88399832639  3.4115566088
+3.8842259596  3.30344942225
+3.86758195496  3.20799253257
+3.83414665359  3.08703046215
+3.85100490125  3.08073941156
+3.8343742868  2.97892327561
+3.83440106717  2.96620478307
+3.78417446908  2.81973753191
+3.80107288732  2.79436874251
+3.74250420162  2.60971191591
+3.7342960159  2.5079298778
+3.70087410472  2.38060856111
+3.68413636875  2.3296663953
+3.63403028236  2.12596592774
+3.6173996679  2.02414979179
+3.58399114691  1.89046922883
+3.59231984433  1.93501805054
+3.55896488409  1.77590050252
+3.51725444606  1.58495262532
+3.49218801267  1.4894616378
+3.4755707884  1.38128625559
+3.42541114126  1.20302277309
+3.40049199995  1.03758007663
+3.36709686915  0.897540267412
+3.32534626055  0.725670129018
+3.29204486107  0.541115595924
+3.24193877467  0.337415128357
+3.20008104457  0.216418960101
+3.19184607847  0.127355414523
+3.15002851893  -0.0127184925347
diff --git a/tests/data/kupriyanov1981-cpr-a2.dat b/tests/data/kupriyanov1981-cpr-a2.dat
new file mode 100644
index 0000000000000000000000000000000000000000..44ff262412d2e7a81e212c150841539bf35486ca
--- /dev/null
+++ b/tests/data/kupriyanov1981-cpr-a2.dat
@@ -0,0 +1,20 @@
+# Data from Kupriyanov & Lukichev, Fiz. Nizk. Temp. (1981)
+# phi I_S [Delta/R]
+0  0
+0.256108096467  0.335423634337
+0.563437812228  0.761008918618
+1.09272787826  1.41917502787
+1.75860892908  2.14255852843
+2.27082512201  2.59545707915
+2.88548455353  2.86970457079
+3.07329715761  2.84559643255
+3.19281426929  2.71836677815
+3.29525750788  2.55253623188
+3.34647912717  2.39910813824
+3.36355300027  2.20693979933
+3.36355300027  1.97617056856
+3.34647912717  1.60423634337
+3.32940525408  1.25794314381
+3.27818363478  0.821627647715
+3.22696201549  0.551978818283
+3.14159265  0.0128205128205
diff --git a/tests/data/kupriyanov1981-cpr-a3.dat b/tests/data/kupriyanov1981-cpr-a3.dat
new file mode 100644
index 0000000000000000000000000000000000000000..46e67ae952f8c136bca363cada6c74102c2df9f8
--- /dev/null
+++ b/tests/data/kupriyanov1981-cpr-a3.dat
@@ -0,0 +1,14 @@
+# Data from Kupriyanov & Lukichev, Fiz. Nizk. Temp. (1981)
+# phi I_S [Delta/R]
+0  0
+0.409772954348  0.323857302118
+0.870767527989  0.635312151616
+1.33176210163  0.895484949833
+1.82690442147  1.07901337793
+2.13423413723  1.10716276477
+2.3903422337  1.08361204013
+2.59522871087  1.00836120401
+2.76596744185  0.86872909699
+2.93670617283  0.600891861761
+3.05622328451  0.306995540691
+3.14159265  0.0128205128205