istinad üçün kopyala
ALLAKHVERDIEV K., NANI R., SALAEV E., TAGIYEV M.
IZVESTIYA AKADEMII NAUK AZERBAIDZHANSKOI SSR SERIYA FIZIKO-TEKHNICHESKIKH I MATEMATICHESKIKH NAUK, no.4, pp.19-25, 1976 (Peer-Reviewed Journal)
