From da409b0a184930a8ebfe28d8c35d46dbd689640e Mon Sep 17 00:00:00 2001
From: Andreas Lauser <and@poware.org>
Date: Fri, 16 Dec 2011 13:24:00 +0000
Subject: [PATCH] resubmit documentation deleted in r6896 and copied further
 details from h20-air

git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/trunk@7085 2fb0f335-1f38-0410-981e-8018bf24f1b0
---
 dumux/material/fluidsystems/h2on2fluidsystem.hh | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/dumux/material/fluidsystems/h2on2fluidsystem.hh b/dumux/material/fluidsystems/h2on2fluidsystem.hh
index 5c73ac77b2..f5c784d578 100644
--- a/dumux/material/fluidsystems/h2on2fluidsystem.hh
+++ b/dumux/material/fluidsystems/h2on2fluidsystem.hh
@@ -284,6 +284,12 @@ public:
     /*!
      * \brief Calculate the density [kg/m^3] of a fluid phase
      *
+     * If useComplexRelations == true, we apply
+     * Formula (2.6) from S.O.Ochs:
+     * "Development of a multiphase multicomponent
+     * model for PEMFC - Technical report: IRTG-NUPUS",
+     * University of Stuttgart, 2008
+     *
      * \param fluidState An abitrary fluid state
      * \param phaseIdx The index of the fluid phase to consider
      */
@@ -308,7 +314,6 @@ public:
             else
             {
                 // See: Ochs 2008
-                // \todo: proper citation
                 Scalar rholH2O = H2O::liquidDensity(T, p);
                 Scalar clH2O = rholH2O/H2O::molarMass();
 
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