@book{16845,
	author = {Oden, J. T. and Reddy, J. N. and Reddy, J. N. ; jt. auth.},
	title = {Variational methods in theoretical mechanics},
	publisher = {Springer-Verlag},
	year = {1976},
	series = {Universitext},
	address = {Berlin},
	note = {"Textbook for students of mechanics and engineering science".}
}