@article{TMF_1987_72_2_a14,
     author = {B. A. Magadeev},
     title = {Nonlocal evolution equations associated with the {Zakharov--Shabat} spectral problem},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {313--317},
     publisher = {mathdoc},
     volume = {72},
     number = {2},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1987_72_2_a14/}
}