Criteria of general weak type inequalities for integral transforms with positive kernels. Genebashvili, I.; Gogatishvili, A.; Kokilashvili, V. — 1994 Georgian Mathematical Journal

Solution of two-weight problems for integral transforms with positive kernels. Genebashvili, I.; Gogatishvili, A.; Kokilashvili, V. — 1996 Georgian Mathematical Journal