@article{MZM_1998_64_6_a3,
     author = {A. P. Buslaev and V. A. Kondrat'ev and A. I. Nazarov},
     title = {On a family of extremum problems and the properties of an integral},
     journal = {Matemati\v{c}eskie zametki},
     pages = {830--838},
     publisher = {mathdoc},
     volume = {64},
     number = {6},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1998_64_6_a3/}
}