diff --git a/ptbposter/ptbposter-test-hoch.tex b/ptbposter/ptbposter-test-hoch.tex
index b6013d1f22ad9fd3db9cdf59b29e8a609c9e3167..648003b27e6074755bf6be706ace93765642fbd2 100644
--- a/ptbposter/ptbposter-test-hoch.tex
+++ b/ptbposter/ptbposter-test-hoch.tex
@@ -2,7 +2,6 @@
 \documentclass[english,sanserif]{ptbposter}
 %\documentclass[ngerman,sanserif]{ptbposter}
 
-\author{Ute Becker}
 \phone{+49-30-3481-7467}
 \fax{+49-30-3481-7503}
 \email{Ute.Becker@ptb.de}
@@ -12,6 +11,13 @@
 \street{Abbestraße 2--12}
 \QRcode{http://www.ptb.de/cms/fachabteilungen/abt7/fb-75/ag-754.html}
 
+\Author{Peter}{Silie}[Physikalisch-Technische Bundesanstalt]
+\Author*{Max}{Mustermann}
+\Author{Gerhold}{Dosenkohl}[Muster Universität Forschungsstadt]
+\Author*{Ellen}{Bogen}[XYZ GmbH]
+
+%%\scaleFontSizes{1.05}
+
 \title{Das Liebesleben der Maikäfer}
 
 \begin{document}
diff --git a/ptbposter/ptbposter.cls b/ptbposter/ptbposter.cls
index 4b0d811d05e75ecdad193d01b273eb0e98b11400..2be6394a4deba6c98766b22d1e99c5fcf95bfc08 100644
--- a/ptbposter/ptbposter.cls
+++ b/ptbposter/ptbposter.cls
@@ -4,7 +4,7 @@
 
 \NeedsTeXFormat{LaTeX2e}[1999/12/01]
 \ProvidesClass{ptbposter}
-    [2015/03/18 v0.2b PTB-Poster-Klasse (RN)]
+    [2015/03/18 v0.2c PTB-Poster-Klasse (RN)]
 
 \PassOptionsToPackage{paper=a0paper}{geometry}
 
@@ -43,12 +43,19 @@
   %\AtBeginDocument{\renewcommand\familydefault{\rmdefault}}
 }
 
-\PassOptionsToClass{fontsize=\the\PTB@default@fsize}{scrartcl}
+\newcommand*\scaleFontSizes[1]{%
+  \@ovri=\PTB@default@fsize %
+  \changefontsizes{#1\@ovri}%
+}
+
+%%%\PassOptionsToClass{fontsize=\the\PTB@default@fsize}{scrartcl}
 
 \ExecuteOptions{portrait,ngerman,serif}
 \ProcessOptions\relax
 \LoadClass{scrartcl}
 
+\scaleFontSizes{1}% Werte nahe 1 sind empfohlen.
+
 \RequirePackage[columnsep=2.5em]{geometry}
 
 \RequirePackage[svgnames]{xcolor}
@@ -102,15 +109,19 @@
 \newcommand*\PTB@fax{}
 \newcommand*\fax[1]{\gdef\PTB@fax{#1}}
 
+\newcommand*\first@author{}
+
 \definecolor{PTBcolor}{rgb}{0,0.67451,0.87451}
 
 \RequirePackage[texcoord]{eso-pic}
 \RequirePackage{pict2e,picture,ifdraft,qrcode,booktabs}
 
-\AddToShipoutPictureBG{% === Kopf ===
+\AddToShipoutPictureBG*{% === Kopf ===
   \put(\PTB@leftmargin,-95.4mm){\includegraphics[width=477mm]{ptbposter-logo.pdf}}%
   \put(\PTB@leftmargin,-160mm){\sffamily\titleFontSize\@title}%
+  \def\and{, }%
   \put(\PTB@leftmargin,-190mm){\sffamily\authorFontSize\@author}%
+  % hier wird auch \@thanks gefüllt
   \put(\PTB@leftmargin,-105mm){%
     \linethickness{2mm}\color{PTBcolor}\line(1,0){\dimexpr\paperwidth-2\PTB@leftmargin}}
   \linethickness{2mm}
@@ -121,7 +132,7 @@
   }%
 }
 
-\AddToShipoutPictureBG{% === Fuß ===
+\AddToShipoutPictureBG*{% === Fuß ===
   \AtTextLowerLeft{%
     \linethickness{.5mm}%
     \put(-.5\@wholewidth-\PTB@textsep,-57mm){%
@@ -135,7 +146,7 @@
         \footFontSize\sffamily
         Physikalisch-Technische Bundesanstalt \\
         Braunschweig und Berlin \par\vspace{1em}
-        \textbf{\@author} \\
+        \textbf{\first@author} \\
         \PTB@department \\
         \PTB@workingGroup
         %\rule{\linewidth}{5mm}%
@@ -154,15 +165,94 @@
       }}}%
       \hspace{12mm}\raisebox{40.5mm}{{\parbox[t][47mm]{175mm}{%
         \footFontSize\sffamily
-        % TODO: Siehe Lösung für abstracts
-        %%%$^{1}$Physikalisch-Technische Bundesanstalt \\
-        %%%$^{2}$Muster Universität Forschungsstadt
-        %\rule{\linewidth}{5mm}%
+        \@thanks % wurde bei der Ausführung von \@autor gefüllt.
       }}}%
     }
   }
 }
 
+% ===== Behandlung der Autoren (siehe ptb-abstracts.sty ) =====
+
+\def\@author{}
+\newcommand\PTB@address{}
+
+\renewcommand\footnotetext[2][]{%
+  \textsuperscript{#1}#2\\
+}
+
+\newcommand\PTB@dec@footnotemark[1][]{%
+  \addtocounter{footnote}{-1}%
+  \begingroup
+    \edef\@tempa{#1}%
+    \ifx\@tempa\@empty\footnotemark\else\footnotemark[#1]\fi
+  \endgroup
+}
+
+\newcommand\PTB@fnmark[1]{%
+  \begingroup
+    \unrestored@protected@xdef\@thefnmark{#1}%
+  \endgroup
+  %\show\@thefnmark
+  \@footnotemark}
+
+\newcommand\Author{%
+  \begingroup
+    \@ifstar{\@tempswatrue\@Author}{\@tempswafalse\@Author}}
+
+\newcommand\@Author[2][]{%     \@tempa=[footnotemark],\@tempb={Firstname}
+  \def\@tempa{#1}\def\@tempb{#2}%
+  \@@Author}
+
+\newcommand\@@Author[2][]{%    \@tempc=[alt. Firstname],\@tempd={Surname}
+  \def\@tempc{#1}\def\@tempd{#2}%
+  \@@@Author}
+
+\newcommand\@@@Author[1][]{%   \@tempe=[Address]
+    \def\@tempe{#1}%
+    \ifx\@tempd\@empty
+      % Empty Surname = Addition to the previous author
+      \g@addto@macro\@author{\PTB@fnmark{,}}%
+    \else
+      \ifx\@author\@empty
+        \xdef\@author{\@tempb~\@tempd}%
+        \xdef\first@author{\@tempb~\@tempd}%
+      \else
+        \expandafter\g@addto@macro\expandafter\@author
+          \expandafter{\expandafter\and\@tempb~}%
+        \expandafter\g@addto@macro\expandafter\@author
+          \expandafter{\@tempd}% I like it ;-(
+      \fi
+    \fi
+    \if@tempswa
+      %                --> \Author*
+      \g@addto@macro\@author{\PTB@dec@footnotemark}%
+    \fi
+    \ifx\@tempa\@empty\else
+      \expandafter\g@addto@macro\expandafter\@author
+        \expandafter{\expandafter\PTB@fnmark\expandafter{\@tempa}}%
+    \fi
+    \ifx\@tempe\@empty\else
+      \if@tempswa
+        \g@addto@macro\@author{\PTB@fnmark{,}}%
+      \fi
+      \expandafter\g@addto@macro\expandafter\@author
+        \expandafter{\expandafter\thanks\expandafter{\@tempe}}%
+    \fi
+  \endgroup
+}
+
+\let\PTB@thanks\thanks
+\renewcommand\thanks[2][]{%
+  \begingroup
+    \def\@tempa{#2}%
+    \ifx\@tempa\@empty
+      \footnotemark[\value{footnote}]%
+    \else
+      \PTB@thanks{#2}%
+    \fi
+  \endgroup
+}%
+
 \iffalse
 %% Werte auf 41pt bezogen
 \edef\large{\noexpand\@setfontsize\noexpand\large