DMITRIEV VM, SOLOVYEV AL. Energy gap and features of HTSC conductivity. Fiz. Nizk. Temp. [інтернет]. 10, Травень 1990 [цит. за 11, Листопад 2025];16(5):650-2. доступний у: http://80.92.230.95/index.php/fnt/article/view/f16-0650e