Merge branch 'master' of https://github.com/coolprop/coolprop

CoolPropBibTeXLibrary.bib

@@ -15,6 +15,19 @@
   Timestamp                = {2014.12.16}
 }
 
+@ARTICLE{Kondou-IJR-2015,
+  author = {Chieko Kondou and Ryuichi Nagata and Noriko Nii and Shigeru Koyama
+	and Yukihiro Higashi},
+  title = {Surface tension of low GWP refrigerants R1243zf, R1234ze(Z), and
+	R1233zd(E)},
+  journal = {Int. J. Refrig.},
+  year = {2015},
+  volume = {53},
+  pages = {80-89},
+  owner = {ian},
+  timestamp = {2015.07.18}
+}
+
 @Article{Abramson-HPR-2011,
   Title                    = {{Melting curves of argon and methane}},
   Author                   = {Evan H. Abramson},

dev/fluids/R1233zd(E).json

@@ -197,6 +197,17 @@
       "max_abs_error": 1.7245881067765447, 
       "max_abs_error_units": "J/mol/K", 
       "type": "rational_polynomial"
+    }, 
+    "surface_tension": {
+      "BibTeX": "Kondou-IJR-2015", 
+      "Tc": 438.75, 
+      "a": [
+        0.06195
+      ], 
+      "description": "sigma = sum(a_i*(1-T/Tc)^n_i)", 
+      "n": [
+        1.277
+      ]
     }
   }, 
   "CAS": "102687-65-0",