@article{DAN_1992_322_6_a1,
     author = {B. T. Bilalov},
     title = {Necessary and sufficient condition for completeness and minimality},
     journal = {Doklady Akademii Nauk},
     pages = {1019--1021},
     publisher = {mathdoc},
     volume = {322},
     number = {6},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1992_322_6_a1/}
}