Não informado. USSR and eastern europe scientific abstracts. Joint Publications Research Service.
Citação do estilo Chicago (17ª ed.)Não informado. USSR and Eastern Europe Scientific Abstracts. Arlington, Va: Joint Publications Research Service.
Citação MLA (8ª ed.)Não informado. USSR and Eastern Europe Scientific Abstracts. Joint Publications Research Service.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.