@article{DAN_1977_235_5_a0,
     author = {V. A. Bulavskii and R. A. Zvyagina},
     title = {A generalization of the block concept in linear programming},
     journal = {Doklady Akademii Nauk},
     pages = {993--996},
     publisher = {mathdoc},
     volume = {235},
     number = {5},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_235_5_a0/}
}