@article{IM2_2019_83_1_a8,
     author = {Ya. Shitov},
     title = {Tropical lower bound for extended formulations. {II.} {Deficiency} graphs of matrices},
     journal = {Izvestiya. Mathematics },
     pages = {184--195},
     publisher = {mathdoc},
     volume = {83},
     number = {1},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2019_83_1_a8/}
}