@article{SM_1987_57_1_a14,
     author = {A. S. Leonov},
     title = {On some algorithms for solving ill-posed extremal problems},
     journal = {Sbornik. Mathematics},
     pages = {229--242},
     publisher = {mathdoc},
     volume = {57},
     number = {1},
     year = {1987},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1987_57_1_a14/}
}