\bib{1956/lupanov}
\yr 1956
\by O. B. Lupanov
\paper On rectifier and contact-rectifier circuits
\jour Doklady Akademii Nauk SSSR
\issn 0002--3264
\vol 111
\pages 1171--1174
\url http://cr.yp.to/\allowbreak bib/\allowbreak entries.html#\allowbreak 1956/\allowbreak lupanov
\endref