@article{ISU_2011_11_1_a10,
     author = {I. A. Pankratov and Yu. N. Chelnokov},
     title = {Analytical solution of differential equations of circular spacecraft orbit orientation},
     journal = {Izvestiya of Saratov University. Mathematics. Mechanics. Informatics},
     pages = {84--89},
     publisher = {mathdoc},
     volume = {11},
     number = {1},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ISU_2011_11_1_a10/}
}