Não informado. USSR and eastern europe scientific abstracts. Joint Publications Research Service.
Chicago-Zitierstil (17. Ausg.)Não informado. USSR and Eastern Europe Scientific Abstracts. Arlington, Va: Joint Publications Research Service.
MLA-Zitierstil (8. Ausg.)Não informado. USSR and Eastern Europe Scientific Abstracts. Joint Publications Research Service.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.