@article{UFA_2011_3_1_a6,
     author = {S. Ya. Startsev},
     title = {Necessary conditions of {Darboux} integrability for differential-difference equations of a~special kind},
     journal = {Ufa mathematical journal},
     pages = {78--82},
     year = {2011},
     volume = {3},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/UFA_2011_3_1_a6/}
}