\Bibitem{Kan82} \by V.~I.~Kanev \paper Quadratic singularities of the Pfaffian theta divisor of a~Prym variety \jour Mat. Zametki \yr 1982 \vol 31 \issue 4 \pages 593--600 \mathnet{http://mi.mathnet.ru/mzm6102} \mathscinet{http://mathscinet.ams.org/mathscinet-getitem?mr=657720} \zmath{https://zbmath.org/?q=an:0568.14017} \transl \jour Math. Notes \yr 1982 \vol 31 \issue 4 \pages 301--305 \crossref{https://doi.org/10.1007/BF01138941} \isi{https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=Publons&SrcAuth=Publons_CEL&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=A1982PP32900025}