@article{UZKU_2011_153_1_a9,
     author = {V. S. Usanin},
     title = {Variation of nongravitational parameters of comet {Encke} as a~result of its decay},
     journal = {U\v{c}\"enye zapiski Kazanskogo universiteta. Seri\^a Fiziko-matemati\v{c}eskie nauki},
     pages = {109--130},
     publisher = {mathdoc},
     volume = {153},
     number = {1},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZKU_2011_153_1_a9/}
}