@article{MT_1989_15_a5,
     author = {V. Ya. Ivanov},
     title = {A method for analyzing three-dimensional non-steady-state particle flows},
     journal = {Matemati\v{c}eskie trudy},
     pages = {172--187},
     year = {1989},
     volume = {15},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_1989_15_a5/}
}