@article{TMF_2000_122_2_a7,
     author = {S. B. Leble},
     title = {Binary {Darboux} transformations and $N$-wave systems in rings},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {239--250},
     publisher = {mathdoc},
     volume = {122},
     number = {2},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2000_122_2_a7/}
}