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@article{IVM_2003_12_a3, author = {V. F. Dem'yanov and F. Fakkinei}, title = {Two-level optimization problems and penalty functions}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {49--61}, publisher = {mathdoc}, number = {12}, year = {2003}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_2003_12_a3/} }
V. F. Dem'yanov; F. Fakkinei. Two-level optimization problems and penalty functions. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 12 (2003), pp. 49-61. http://geodesic.mathdoc.fr/item/IVM_2003_12_a3/