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@article{IVM_1987_8_a6, author = {I. P. Mityuk}, title = {An upper bound for the product of interior radii of domains, and covering theorems}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {39--47}, publisher = {mathdoc}, number = {8}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1987_8_a6/} }
I. P. Mityuk. An upper bound for the product of interior radii of domains, and covering theorems. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 8 (1987), pp. 39-47. http://geodesic.mathdoc.fr/item/IVM_1987_8_a6/