@article{TMF_2003_137_3_a4,
     author = {F. Calogero and J. Fran\c{c}oise},
     title = {Nonlinear {Evolution} {ODEs} {Featuring} {Many} {Periodic} {Solutions}},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {358--374},
     publisher = {mathdoc},
     volume = {137},
     number = {3},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2003_137_3_a4/}
}