Vestnik St. Petersburg University, Mathematics
Vestnik St. Petersburg University: Mathematics > 2015 > 48 > 2 > 61-65
Vestnik St. Petersburg University: Mathematics > 2015 > 48 > 2 > 102-108
Vestnik St. Petersburg University: Mathematics > 2015 > 48 > 2 > 57-60
Vestnik St. Petersburg University: Mathematics > 2015 > 48 > 2 > 126-133
Vestnik St. Petersburg University: Mathematics > 2015 > 48 > 2 > 72-74
Vestnik St. Petersburg University: Mathematics > 2015 > 48 > 2 > 89-98
Vestnik St. Petersburg University: Mathematics > 2015 > 48 > 2 > 82-88
Vestnik St. Petersburg University: Mathematics > 2015 > 48 > 2 > 75-81
Vestnik St. Petersburg University: Mathematics > 2015 > 48 > 2 > 66-71
Vestnik St. Petersburg University: Mathematics > 2015 > 48 > 2 > 99-101
Vestnik St. Petersburg University: Mathematics > 2015 > 48 > 2 > 109-118
Vestnik St. Petersburg University: Mathematics > 2015 > 48 > 2 > 119-125