Breeding for meat quality in pigs : DIZ / Ron Hovenier . Wageningen :  Landbouwuniversiteit , 1993 . 129 s . ISBN 90-5485-129-5 . [1, of that borrowed 0]

Introdukcionnoje izučenije cvetočnych rastenij / Redaktor L.Je. Soboleva . Jalta :  Gosudarstv. Nikitskij botan. sad , 1985 . 131 s . ISSN 0201-7997 . [1, of that borrowed 0]