@book{170429,
	author = {Chopra, Anil K.},
	title = {Dynamics of structures},
	publisher = {Pearson,},
	year = {2017.},
	series = {Prentice Hall International Series in civil engineering and engineering mechanics.},
	address = {Upper Saddle River :},
	edition = {5a ed.},
	note = {Incluye índice.}
}