@article{DAN_1971_196_4_a4,
     author = {R. A. Zvyagina},
     title = {Linear programming problems with matrices of arbitrary block structure},
     journal = {Doklady Akademii Nauk},
     pages = {755--758},
     publisher = {mathdoc},
     volume = {196},
     number = {4},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_196_4_a4/}
}