@article{DE_1989_25_7_a4,
     author = {A. B. Ovcharov},
     title = {An analytic solution of a problem of optimizing an approach process},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1136--1141},
     publisher = {mathdoc},
     volume = {25},
     number = {7},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1989_25_7_a4/}
}