None Unknown Submitted 1977 | SovietRxiv: ru-197701.52492 | Translated from Russian | PDF only English PDF View original source This record has an English full-text PDF, but no abstract or extracted text is available yet. Submission history [v1] 1977 Access Paper This record has an English full-text PDF, but no abstract or extracted text is available yet. Download PDF (English) View original source Citation Cite This Paper Share Copy Link Bookmark Related Papers Feedback Report Problem
