Authors with multiple footnotes

Question

Say I have an article. Under the title goes the name of three authors. The first author belongs to two organisations. The second belongs to one of the two from the first. And the last author belongs to a third organisation.

I considered either \footnote or \thanks but neither of them seem to allow me to tag several authors with the same footnote, and tag one author with several.

Here's an example:

A.C. Clarke (a, b); F. Herbert (b); I. Asimov (c)

(a): Stanford University

(b): Yale University

(c): Harvard University

Answer 1

Here an easy way out is to just insert the appropriate \thanks where it is needed. The MWE below does this through \specificthanks{<num>}:

\documentclass{article}
\makeatletter
\newcommand{\specificthanks}[1]{\@fnsymbol{#1}}% Inserts a specific \thanks symbol
\makeatother
\title{My document}
\author{A.C.~Clarke\thanks{Stanford University}
  \textsuperscript{, \specificthanks{2}} \and
  F.~Herbert\thanks{Yale University}\label{yale-uni} \and
  I.~Asimov\thanks{Harvard University}}
\begin{document}
\maketitle
\end{document}

Answer 2

I've been using this handy trick by Anthony Liekens to save and remember footnotes.

Here's a MWE example I once prepared for myself...

\documentclass{article}
\usepackage{hyperref}
\newcommand{\footremember}[2]{%
\footnote{#2}
\newcounter{#1}
\setcounter{#1}{\value{footnote}}%
}
\newcommand{\footrecall}[1]{%
\footnotemark[\value{#1}]%
}
\title{How to bowl properly}
\author{%
  The Dude\footremember{alley}{Holly Star Lanes Bowling Alley}%
  \and Walter Sobchak\footremember{trailer}{probably in a trailer park}%
  \and Jesus Quintana\footrecall{alley} \footnote{Mexico?}%
  \and Uli Kunkel\footrecall{trailer} \footnote{Germany?}%
  }
\begin{document}
\maketitle
The whole example is taken from \href{http://anthony.liekens.net/index.php/LaTeX/MultipleFootnoteReferences}{Anthony Liekens}\ldots
\end{document}