@book{15994,
	author = {Drechsler, W. and Mayer, M. E. and Mayer, M. E. ; jt. auth.},
	title = {Fiber bundle techniques in guage theories, lectures in mathematical physics at the University of Texas at Austin},
	publisher = {Springer-Verlag},
	year = {1977},
	series = {Lecture notes in Physics},
	address = {Berlin}
}