@article{TMF_2011_168_1_a2,
     author = {M. S. Bruz\'on and M. L. Gandarias},
     title = {Classical and nonclassical symmetries for {the~Krichever--Novikov} equation},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {24--34},
     publisher = {mathdoc},
     volume = {168},
     number = {1},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2011_168_1_a2/}
}