@article {Ivashkin:April 2003:0094-5765:663,
	author = "Ivashkin V.V.",
	title = "Analysis of space flight mechanics problems",
	journal = "Acta Astronautica",
	volume = "52",
	year = "April 2003",
	abstract = "",
	pages = "663-670(8)",
	url = "http://www.ingentaconnect.com/content/els/00945765/2003/00000052/00000008/art00134"
	doi = "doi:10.1016/S0094-5765(02)00134-0	"
}