@article{DAN_1973_212_4_a10,
     author = {G. D. Maistrovskii and Yu. G. Ol'khovskii},
     title = {On the theory of conditional minimization},
     journal = {Doklady Akademii Nauk},
     pages = {818--821},
     publisher = {mathdoc},
     volume = {212},
     number = {4},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1973_212_4_a10/}
}