@article{ISU_2012_12_3_a13,
     author = {I. A. Pankratov and Ya. G. Sapunkov and Yu. N. Chelnokov},
     title = {About a~problem of spacecraft's orbit optimal reorientation},
     journal = {Izvestiya of Saratov University. Mathematics. Mechanics. Informatics},
     pages = {87--95},
     publisher = {mathdoc},
     volume = {12},
     number = {3},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ISU_2012_12_3_a13/}
}