@article{SJIM_2009_12_3_a12,
     author = {V. P. Tanana and A. I. Sidikova},
     title = {On the {Order} {Optimality} of {a~Method} for {Evaluating} {Unbounded} {Operators} and {Its} {Applications}},
     journal = {Sibirskij \v{z}urnal industrialʹnoj matematiki},
     pages = {130--140},
     publisher = {mathdoc},
     volume = {12},
     number = {3},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJIM_2009_12_3_a12/}
}