Add tpx citations

doc/doxygen/cantera.bib

@@ -206,6 +206,13 @@
     doi = {10.11588/heidok.00005889},
     url = {https://dx.doi.org/10.11588/heidok.00005889},
     year = {2005}}
+@book{reynolds1979,
+    author = {W.~C.~Reynolds},
+    title = {Thermodynamic Properties in {SI}: graphs, tables, and computational
+        equations for forty substances},
+    publisher = {Stanford University},
+    address = {Stanford},
+    year = {1979}}
 @article{selle1999,
     author = {S.~Selle and U.~Riedel},
     journal = {Annals of the New York Academy of Sciences},
@@ -254,6 +261,18 @@
     doi = {10.1252/jcej.7.417},
     url = {https://doi.org/10.1252/jcej.7.417},
     year = {1975}}
+@article{tillner-roth1994,
+    author = {R.~Tillner-Roth and H.~D.~Baehr},
+    journal = {Journal of Physical and Chemical Reference Data},
+    number = {5},
+    pages = {657--729},
+    title = {An International Standard Formulation for the Thermodynamic
+        Properties of 1,1,1,2-Tetrafluoroethane ({HFC-134a}) for Temperatures from
+        170 {K} to 455 {K} and Pressures up to 70 {MPa}},
+    doi = {10.1063/1.555958},
+    url = {https://dx.doi.org/10.1063/1.555958},
+    volume = {23},
+    year = {1994}}
 @article{tsang1991,
     author = {W.~Tsang and J.~T.~Herron},
     journal = {Journal of Physical and Chemical Reference Data},

src/tpx/CarbonDioxide.h

@@ -12,7 +12,7 @@ namespace tpx
 {
 
 //! Pure species representation of carbon dioxide. Values and functions are
-//! from "Thermodynamic Properties in SI" by W.C. Reynolds
+//! from Reynolds @cite reynolds1979.
 class CarbonDioxide : public Substance
 {
 public:

src/tpx/HFC134a.h

@@ -12,12 +12,8 @@ namespace tpx
 {
 //! Equation of state for HFC-134a.
 //!
-//! Implements the equation of state given in:
-//! R. Tillner-Roth and H. D. Baehr. "An International Standard Formulation for
-//! The Thermodynamic Properties of 1,1,1,2-Tetrafluoroethane (HFC-134a) for
-//! Temperatures From 170 K to 455 K and Pressures up to 70 MPa". J. Phys.
-//! Chem. Ref. Data, Vol. 23, No. 5, 1994. pp. 657--729.
-//! http://dx.doi.org/10.1063/1.555958
+//! Implements the equation of state given in Tillner-Roth and Baehr
+//! @cite tillner-roth1994.
 class HFC134a : public Substance
 {
 public:

src/tpx/Heptane.h

@@ -11,7 +11,7 @@
 namespace tpx
 {
 //! Pure species representation of heptane. Values and functions are
-//! from "Thermodynamic Properties in SI" by W.C. Reynolds
+//! from Reynolds @cite reynolds1979.
 class Heptane : public Substance
 {
 public:

src/tpx/Hydrogen.h

@@ -12,7 +12,7 @@ namespace tpx
 {
 
 //! Pure species representation of hydrogen. Values and functions are
-//! from "Thermodynamic Properties in SI" by W.C. Reynolds
+//! from Reynolds @cite reynolds1979.
 class hydrogen : public Substance
 {
 public:

src/tpx/Methane.h

@@ -12,7 +12,7 @@ namespace tpx
 {
 
 //! Pure species representation of methane. Values and functions are
-//! from "Thermodynamic Properties in SI" by W.C. Reynolds
+//! from Reynolds @cite reynolds1979.
 class methane : public Substance
 {
 public:

src/tpx/Nitrogen.h

@@ -12,7 +12,7 @@ namespace tpx
 {
 
 //! Pure species representation of nitrogen. Values and functions are
-//! from "Thermodynamic Properties in SI" by W.C. Reynolds
+//! from Reynolds @cite reynolds1979.
 class nitrogen : public Substance
 {
 public:
@@ -50,4 +50,3 @@ private:
 }
 
 #endif // ! TPX_NITROGEN_H
-

src/tpx/Oxygen.h

@@ -11,7 +11,7 @@
 namespace tpx
 {
 //! Pure species representation of oxygen. Values and functions are
-//! from "Thermodynamic Properties in SI" by W.C. Reynolds
+//! from Reynolds @cite reynolds1979.
 class oxygen : public Substance
 {
 public:

src/tpx/Water.h

@@ -11,7 +11,7 @@
 namespace tpx
 {
 //! Pure species representation of water. Values and functions are from
-//! "Thermodynamic Properties in SI" by W.C. Reynolds
+//! from Reynolds @cite reynolds1979.
 class water : public Substance
 {
 public: