In:
Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, Saint Petersburg State University, Vol. 4(62), No. 4 ( 2017), p. 608-621
Type of Medium:
Online Resource
ISSN:
1025-3106
,
2587-5884
DOI:
10.21638/11701/spbu01.2017.409
Language:
Unknown
Publisher:
Saint Petersburg State University
Publication Date:
2017
SSG:
17,1