@article{MM_2008_20_9_a6,
     author = {M. E. Igla and N. N. Kalitkin},
     title = {On convergence of truncated gradient methods},
     journal = {Matemati\v{c}eskoe modelirovanie},
     pages = {94--104},
     publisher = {mathdoc},
     volume = {20},
     number = {9},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MM_2008_20_9_a6/}
}