@book{18115,
	author = {Arnolʹd, Vladimir I. and Kozlov, Valery V.},
	title = {Mathematical aspects of classical and celestial mechanics},
	publisher = {Spinger},
	year = {2006},
	series = {Encyclopaedia of mathematical sciences, v.3.; Dynamical systems III},
	address = {Berlin},
	edition = {3rd ed.}
}