@book{30179,
	author = {Dubrovin, B. A.; Fomenko, A. T.; Novikov, S. P.; Translated By Robert G. Burns.},
	title = {Modern geometry - methods and applications part I :},
	publisher = {Springer-Verlag,},
	year = {1992.},
	series = {Second edition.},
	address = {[S.l.] :}
}