Added references

src/TurbulenceModels/turbulenceModels/RAS/kEpsilon/kEpsilon.H

@@ -28,7 +28,25 @@ Group
     grpRASTurbulence
 
 Description
-    Standard k-epsilon turbulence model
+    Standard k-epsilon turbulence model for compressible flows
+    including RDT-based compression term.
+
+    Reference:
+    \verbatim
+        Standard model:
+            Launder, B.E., and Spalding, D.B.,
+            "Mathematical Models of Turbulence",
+            Academic Press, 1972.
+
+            Launder, B.E., and Spalding, D.B.,
+            "Computational Methods for Turbulent Flows",
+            Comp. Meth in Appl Mech & Eng'g, Vol 3, 1974, pp 269-289.
+
+        Compressible form including RDT-based compression term:
+            "k-epsilon equations for compressible reciprocating engine flows"
+            El Tahry, S. H.,
+            AIAA Journal of Energy 7, 1983, pp 345-353.
+    \endverbatim
 
     The default model coefficients correspond to the following:
     \verbatim

src/turbulenceModels/compressible/RAS/LaunderSharmaKE/LaunderSharmaKE.H

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2012 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2014 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -29,7 +29,20 @@ Group
 
 Description
     Launder and Sharma low-Reynolds k-epsilon turbulence model for
-    compressible and combusting flows.
+    compressible and combusting flows including RDT-based compression term.
+
+    References:
+    \verbatim
+        "Application of the Energy-Dissipation Model of Turbulence
+         to the Calculation of Flow Near a Spinning Disc",
+        Launder, B. E. and Sharma, B. I.,
+        Letters in Heat and Mass Transfer, Vol. 1, No. 2, 1974, pp 131-138.
+
+        For the RDT-based compression term:
+        "k-epsilon equations for compressible reciprocating engine flows"
+        El Tahry, S. H.,
+        AIAA Journal of Energy 7, 1983, pp 345-353.
+    \endverbatim
 
     The default model coefficients correspond to the following:
     \verbatim

src/turbulenceModels/compressible/RAS/RNGkEpsilon/RNGkEpsilon.H

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2012 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2014 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -28,7 +28,21 @@ Group
     grpCmpRASTurbulence
 
 Description
-    Renormalisation group k-epsilon turbulence model for compressible flows.
+    Renormalisation group k-epsilon turbulence model for compressible flows
+    including RDT-based compression term.
+
+    References:
+    \verbatim
+        "Development of Turbulence Models for Shear Flow by a
+         Double Expansion Technique",
+        Yakhot, V., Orszag, S.A., Thangam, S., Gatski, T.B. and Speziale, C.G.",
+        Physics of Fluids A, Vol. 4, No. 7, 1992, pp 1510-1520.
+
+        For the RDT-based compression term:
+        "k-epsilon equations for compressible reciprocating engine flows"
+        El Tahry, S. H.,
+        AIAA Journal of Energy 7, 1983, pp 345-353.
+    \endverbatim
 
     The default model coefficients correspond to the following:
     \verbatim

src/turbulenceModels/compressible/RAS/kEpsilon/kEpsilon.H

@@ -35,7 +35,7 @@ Description
     \verbatim
         "k-epsilon equations for compressible reciprocating engine flows"
         El Tahry, S. H.,
-        AIAA Journal of Energy 7 (1983), 345-353.
+        AIAA Journal of Energy 7, 1983, pp 345-353.
     \endverbatim
 
     The default model coefficients correspond to the following:

src/turbulenceModels/incompressible/RAS/RNGkEpsilon/RNGkEpsilon.H

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2012 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2014 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -30,6 +30,14 @@ Group
 Description
     Renormalisation group k-epsilon turbulence model for incompressible flows.
 
+    References:
+    \verbatim
+        "Development of Turbulence Models for Shear Flow by a
+         Double Expansion Technique",
+        Yakhot, V., Orszag, S.A., Thangam, S., Gatski, T.B. and Speziale, C.G.",
+        Physics of Fluids A, Vol. 4, No. 7, 1992, pp 1510-1520.
+    \endverbatim
+
     The default model coefficients correspond to the following:
     \verbatim
         RNGkEpsilonCoeffs

src/turbulenceModels/incompressible/RAS/kEpsilon/kEpsilon.H

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2012 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2014 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -30,6 +30,17 @@ Group
 Description
     Standard k-epsilon turbulence model for incompressible flows.
 
+    Reference:
+    \verbatim
+        Launder, B.E., and Spalding, D.B.,
+        "Mathematical Models of Turbulence",
+        Academic Press, 1972.
+
+        Launder, B.E., and Spalding, D.B.,
+        "Computational Methods for Turbulent Flows",
+        Comp. Meth in Appl Mech & Eng'g, Vol 3, 1974, pp 269-289.
+    \endverbatim
+
     The default model coefficients correspond to the following:
     \verbatim
         kEpsilonCoeffs