@article{ZVMMF_1986_26_9_a18,
     author = {V. I. Gryn'},
     title = {Variational principles for the transport equation and the method of spherical harmonics},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1433--1434},
     publisher = {mathdoc},
     volume = {26},
     number = {9},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1986_26_9_a18/}
}