@article{DAN_1965_164_5_a5,
     author = {I. N. Kovalenko},
     title = {Reconstruction of the characteristics of a system through observations on the outflow},
     journal = {Doklady Akademii Nauk},
     pages = {979--981},
     publisher = {mathdoc},
     volume = {164},
     number = {5},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1965_164_5_a5/}
}