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@article{DAN_1989_306_5_a9, author = {Ya. Z. Tsypkin and A. S. Poznyak}, title = {A generalized method of instrumental variables in problems of the}, journal = {Doklady Akademii Nauk}, pages = {1068--1072}, publisher = {mathdoc}, volume = {306}, number = {5}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1989_306_5_a9/} }
Ya. Z. Tsypkin; A. S. Poznyak. A generalized method of instrumental variables in problems of the. Doklady Akademii Nauk, Tome 306 (1989) no. 5, pp. 1068-1072. http://geodesic.mathdoc.fr/item/DAN_1989_306_5_a9/