@book{18155,
	author = {Beutler, Gerhard and Mervart, Leos},
	title = {Methods of celestial mechanics : physical, mathematical, and numerical principles (Vol.1)},
	publisher = {Springer},
	year = {2010},
	series = {Astronomy and Astrophysics Library},
	address = {Berlin},
	note = {with 99 figures, including 11 color figures, 32 tables}
}