@article{TIMB_2011_19_2_a0,
     author = {V. I. Bakhtin},
     title = {A conditional extremum necessary condition in terms of local algebras},
     journal = {Trudy Instituta matematiki},
     pages = {3--6},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMB_2011_19_2_a0/}
}