@article{IVM_1990_6_a6,
     author = {A. S. Leonov},
     title = {Order optimality of the accuracy of some algorithms for solving ill-posed extremal problems},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {30--38},
     publisher = {mathdoc},
     number = {6},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1990_6_a6/}
}