@article{SJIM_2015_18_2_a4,
     author = {V. M. Galkin},
     title = {Representation of consistency conditions on characteristics},
     journal = {Sibirskij \v{z}urnal industrialʹnoj matematiki},
     pages = {48--51},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJIM_2015_18_2_a4/}
}