\bib{1993/jaeschke} \yr 1993 \mr 94d:11004 \by Gerhard Jaeschke \paper On strong pseudoprimes to several bases \jour Mathematics of Computation \issn 0025--5718 \vol 61 \pages 915--926 \url http://cr.yp.to/\allowbreak bib/\allowbreak entries.html#\allowbreak 1993/\allowbreak jaeschke \endref