I'm trying to set for an article the authors information. There is one author that has multiple affiliation and I have some difficulties to write the right code for that. Thank you in advance for any help.

As error message I'm getting this ! Undefined control sequence. \fnms {John} \snm {Marc}

This is the code:








\begin{frontmatter}              % The preamble begins here.

\title{Some definitions}


\author[1,2,a]{\fnms{John} \snm{Marc}}%
%\thanks{Corresponding Author: Book Production Manager, IOS Press, Nieuwe Hemweg 6B,
%1013 BG Amsterdam, The Netherlands; E-mail:
\author[1,b]{\fnms{Peter} \snm{Wolf}}
\author[1,c]{\fnms{Dean} \snm{Boy}}

%\runningauthor{B.P. Manager et al.}
\affiliation[A]{University of LATEX, Higher Institute lab}
\affiliation[B]{niversity of LATEX, Math lab}


enter image description here \tt{(a)email1@gmail.com,(b)email2@gmail.com,(c)email3@yahoo.com}

At bottom is an image showing what I want to reproduce. Here is the IOS-Book-Article class file used in the article code.

  • I have tried the following code but it gives no author name nor author affiliation output: \author[John Marc]% {John Marc\textsuperscript{1,2}, Peter Wolf\textsuperscript{1}, Dean Boy$^1$ \\ $^1$University of LATEX, Higher Institute lab\\ $^2$University of LATEX, Math lab}
    – cProg
    Jul 12, 2016 at 13:53
  • If you have to use that class, it's obviously wrong to load authblk. Where can the instructions for the class be retrieved?
    – egreg
    Jul 12, 2016 at 18:55
  • Egreg class instructions can be found here: texpaste.com/n/9z0o12tq
    – cProg
    Jul 12, 2016 at 19:05
  • No, those aren't instructions
    – egreg
    Jul 12, 2016 at 20:47
  • Instructions can be downloaded from here: iospress.nl/wp-content/uploads/2016/02/…
    – cProg
    Jul 12, 2016 at 20:59

2 Answers 2


As far as I can see, the class doesn't provide for double affiliations of a single author. If you are required to use the class, don't try tweaking its internals, because this will only annoy the copy editors and may cause rejection of your paper.

A double affiliation is quite simple to achieve, though.



\begin{frontmatter}              % The preamble begins here.

\title{Some definitions}

\author[A]{\fnms{John} \snm{Marc}}%
\thanks{Corresponding Author: Book Production Manager, IOS Press, Nieuwe Hemweg 6B,
1013 BG Amsterdam, The Netherlands; E-mail:
\author[C]{\fnms{Peter} \snm{Wolf}}
\author[C]{\fnms{Dean} \snm{Boy}}

\address[A]{University of \LaTeX, Higher Institute lab\\
and University of \LaTeX, Math lab}
\address[C]{Some University}


enter image description here


To whom it can help. I sligthly modified Egreg solution to add emails in titles.



\begin{frontmatter}              % The preamble begins here.

\title{Some definitions}
\author[A,B,C]{\fnms{John} \snm{Marc}}%
\author[B,D]{\fnms{Peter} \snm{Wolf}}
\author[B,E]{\fnms{Dean} \snm{Boy}}

\address[A]{University of \LaTeX, Higher Institute lab}
\address[B]{Some University}



Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.