@article{AA_2010_22_3_a9,
     author = {A. K. Pogrebkov},
     title = {Hirota difference equation and a~commutator identity on an associative algebra},
     journal = {Algebra i analiz},
     pages = {191--205},
     year = {2010},
     volume = {22},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AA_2010_22_3_a9/}
}