\bib{1993/denboer}
\yr 1993
\by Bert den Boer
\paper A simple and key-economical unconditional authentication scheme
\jour Journal of Computer Security
\issn 0926--227X
\vol 2
\pages 65--71
\url http://cr.yp.to/\allowbreak bib/\allowbreak entries.html#\allowbreak 1993/\allowbreak denboer
\endref