diff --git a/src/Mod/Fem/femsolver/elmer/equations/electricforce_writer.py b/src/Mod/Fem/femsolver/elmer/equations/electricforce_writer.py
index 645db2cf1d..e0ba63b076 100644
--- a/src/Mod/Fem/femsolver/elmer/equations/electricforce_writer.py
+++ b/src/Mod/Fem/femsolver/elmer/equations/electricforce_writer.py
@@ -1,5 +1,6 @@
 # ***************************************************************************
-# *   Copyright (c) 2023 Uwe Stöhr <uwestoehr@lyx.org>                      *
+# *   Copyright (c) 2020 Markus Hovorka <m.hovorka@live.de>                 *
+# *   Copyright (c) 2022 Uwe Stöhr <uwestoehr@lyx.org>                      *
 # *                                                                         *
 # *   This file is part of the FreeCAD CAx development system.              *
 # *                                                                         *
@@ -22,7 +23,7 @@
 # ***************************************************************************
 
 __title__ = "FreeCAD FEM Electricforce Elmer writer"
-__author__ = "Uwe Stöhr"
+__author__ = "Markus Hovorka, Uwe Stöhr"
 __url__ = "https://www.freecad.org"
 
 ## \addtogroup FEM
diff --git a/src/Mod/Fem/femsolver/elmer/equations/electrostatic_writer.py b/src/Mod/Fem/femsolver/elmer/equations/electrostatic_writer.py
index fa9b7257f0..de5984f248 100644
--- a/src/Mod/Fem/femsolver/elmer/equations/electrostatic_writer.py
+++ b/src/Mod/Fem/femsolver/elmer/equations/electrostatic_writer.py
@@ -1,5 +1,7 @@
 # ***************************************************************************
-# *   Copyright (c) 2023 Uwe Stöhr <uwestoehr@lyx.org>                      *
+# *   Copyright (c) 2017 Markus Hovorka <m.hovorka@live.de>                 *
+# *   Copyright (c) 2020 Bernd Hahnebach <bernd@bimstatik.org>              *
+# *   Copyright (c) 2022 Uwe Stöhr <uwestoehr@lyx.org>                      *
 # *                                                                         *
 # *   This file is part of the FreeCAD CAx development system.              *
 # *                                                                         *
@@ -22,7 +24,7 @@
 # ***************************************************************************
 
 __title__ = "FreeCAD FEM Electrostatics Elmer writer"
-__author__ = "Uwe Stöhr"
+__author__ = "Markus Hovorka, Bernd Hahnebach, Uwe Stöhr"
 __url__ = "https://www.freecad.org"
 
 ## \addtogroup FEM
diff --git a/src/Mod/Fem/femsolver/elmer/equations/flow_writer.py b/src/Mod/Fem/femsolver/elmer/equations/flow_writer.py
index 786e970af9..9abd3a6a68 100644
--- a/src/Mod/Fem/femsolver/elmer/equations/flow_writer.py
+++ b/src/Mod/Fem/femsolver/elmer/equations/flow_writer.py
@@ -1,5 +1,7 @@
 # ***************************************************************************
-# *   Copyright (c) 2023 Uwe Stöhr <uwestoehr@lyx.org>                      *
+# *   Copyright (c) 2017 Markus Hovorka <m.hovorka@live.de>                 *
+# *   Copyright (c) 2020 Bernd Hahnebach <bernd@bimstatik.org>              *
+# *   Copyright (c) 2022 Uwe Stöhr <uwestoehr@lyx.org>                      *
 # *                                                                         *
 # *   This file is part of the FreeCAD CAx development system.              *
 # *                                                                         *
@@ -22,7 +24,7 @@
 # ***************************************************************************
 
 __title__ = "FreeCAD FEM Flow Elmer writer"
-__author__ = "Uwe Stöhr"
+__author__ = "Markus Hovorka, Bernd Hahnebach, Uwe Stöhr"
 __url__ = "https://www.freecad.org"
 
 ## \addtogroup FEM
diff --git a/src/Mod/Fem/femsolver/elmer/equations/flux_writer.py b/src/Mod/Fem/femsolver/elmer/equations/flux_writer.py
index 49eb4f3c5a..c4116f9458 100644
--- a/src/Mod/Fem/femsolver/elmer/equations/flux_writer.py
+++ b/src/Mod/Fem/femsolver/elmer/equations/flux_writer.py
@@ -1,5 +1,7 @@
 # ***************************************************************************
-# *   Copyright (c) 2023 Uwe Stöhr <uwestoehr@lyx.org>                      *
+# *   Copyright (c) 2017 Markus Hovorka <m.hovorka@live.de>                 *
+# *   Copyright (c) 2020 Bernd Hahnebach <bernd@bimstatik.org>              *
+# *   Copyright (c) 2022 Uwe Stöhr <uwestoehr@lyx.org>                      *
 # *                                                                         *
 # *   This file is part of the FreeCAD CAx development system.              *
 # *                                                                         *
@@ -22,7 +24,7 @@
 # ***************************************************************************
 
 __title__ = "FreeCAD FEM Flux Elmer writer"
-__author__ = "Uwe Stöhr"
+__author__ = "Markus Hovorka, Bernd Hahnebach, Uwe Stöhr"
 __url__ = "https://www.freecad.org"
 
 ## \addtogroup FEM
diff --git a/src/Mod/Fem/femsolver/elmer/equations/heat_writer.py b/src/Mod/Fem/femsolver/elmer/equations/heat_writer.py
index 3ff1e9094d..ac42e6841f 100644
--- a/src/Mod/Fem/femsolver/elmer/equations/heat_writer.py
+++ b/src/Mod/Fem/femsolver/elmer/equations/heat_writer.py
@@ -1,5 +1,7 @@
 # ***************************************************************************
-# *   Copyright (c) 2023 Uwe Stöhr <uwestoehr@lyx.org>                      *
+# *   Copyright (c) 2017 Markus Hovorka <m.hovorka@live.de>                 *
+# *   Copyright (c) 2020 Bernd Hahnebach <bernd@bimstatik.org>              *
+# *   Copyright (c) 2022 Uwe Stöhr <uwestoehr@lyx.org>                      *
 # *                                                                         *
 # *   This file is part of the FreeCAD CAx development system.              *
 # *                                                                         *
@@ -22,7 +24,7 @@
 # ***************************************************************************
 
 __title__ = "FreeCAD FEM Heat Elmer writer"
-__author__ = "Uwe Stöhr"
+__author__ = "Markus Hovorka, Bernd Hahnebach, Uwe Stöhr"
 __url__ = "https://www.freecad.org"
 
 ## \addtogroup FEM
diff --git a/src/Mod/Fem/femsolver/elmer/writer.py b/src/Mod/Fem/femsolver/elmer/writer.py
index 85e342f4c4..699459b4ff 100644
--- a/src/Mod/Fem/femsolver/elmer/writer.py
+++ b/src/Mod/Fem/femsolver/elmer/writer.py
@@ -24,7 +24,7 @@
 # ***************************************************************************
 
 __title__ = "FreeCAD FEM solver Elmer writer"
-__author__ = "Markus Hovorka, Uwe Stöhr"
+__author__ = "Markus Hovorka, Bernd Hahnebach, Uwe Stöhr"
 __url__ = "https://www.freecadweb.org"
 
 ## \addtogroup FEM