@article{MZM_1990_47_4_a2,
     author = {I. I. Golichev and R. L. Lookmanov},
     title = {A~method for the expansion of a~function of an operator in some problems of optimal control},
     journal = {Matemati\v{c}eskie zametki},
     pages = {17--25},
     publisher = {mathdoc},
     volume = {47},
     number = {4},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1990_47_4_a2/}
}