Search results
Mathematical Notes > 2017 > 101 > 1-2 > 123-131
Journal of Mathematical Sciences > 2015 > 210 > 1 > 86-113
Georgian Mathematical Journal > 1997 > 4 > 2 > 109-116
Mathematical Notes > 2017 > 101 > 1-2 > 123-131
Journal of Mathematical Sciences > 2015 > 210 > 1 > 86-113
Georgian Mathematical Journal > 1997 > 4 > 2 > 109-116