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@article{MZM_1990_47_5_a9, author = {K. Yu. Osipenko}, title = {Blaschke products which have the least deviation from zero}, journal = {Matemati\v{c}eskie zametki}, pages = {71--80}, publisher = {mathdoc}, volume = {47}, number = {5}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1990_47_5_a9/} }
K. Yu. Osipenko. Blaschke products which have the least deviation from zero. Matematičeskie zametki, Tome 47 (1990) no. 5, pp. 71-80. http://geodesic.mathdoc.fr/item/MZM_1990_47_5_a9/