@misc{_Comata,
 howpublished={online},
 type={Text},
 title={Comata est signum naturale pestilentiae. The comet in Latin texts by medieval Polish authors},
 URL={http://www.rcin.org.pl/Content/237274/Polonica+42+strony+85-93+Maciag-Fiedler_ost.pdf},
}