UNSYMMETRIZED SELF-CONSISTENT FIELD APPROXIMATION FOR IMPERFECT STRONGLY ANHARMONIC CRYSTALS Article ZUBOV V.I. Physica Status Solidi (B) Basic Research. Vol. 111. 1982. P. 417-423
ATELECTASIS (PATHOLOGICAL ANATOMY AND PATHOGENESIS) Article ESIPOVA I.K., EVSEGNEEVA M.V. Sovetskaya Meditsina. 1982. P. 68-73