@article{MZM_1989_45_6_a0,
     author = {E. R. Avakov},
     title = {Necessary extremum conditions for smooth anormal problems with equality- and inequality-type constraints},
     journal = {Matemati\v{c}eskie zametki},
     pages = {3--11},
     publisher = {mathdoc},
     volume = {45},
     number = {6},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1989_45_6_a0/}
}