@article{DAN_1968_180_4_a6,
     author = {A. M. Rubinov},
     title = {Dual production models},
     journal = {Doklady Akademii Nauk},
     pages = {795--798},
     year = {1968},
     volume = {180},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1968_180_4_a6/}
}