@article{MZM_1999_66_5_a15,
     author = {V. P. Maslov and A. E. Ruuge},
     title = {A~Lax pair for equations of the characteristics of averaged many-particle operators},
     journal = {Matemati\v{c}eskie zametki},
     pages = {793--796},
     publisher = {mathdoc},
     volume = {66},
     number = {5},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1999_66_5_a15/}
}