@book{1200,
	author = {Gere, James M. and Goodno, Barry J.},
	title = {Mechanics of materials },
	publisher = {Cengage Learning,},
	year = {2013.},
	address = {Andover :},
	edition = {8th ed.},
	url = {https://www.amazon.com/Mechanics-Materials-8th-Russell-Hibbeler/dp/0136022308}
}