@book{1604,
	author = {Williams, Alan},
	title = {Structural analysis},
	publisher = {Elsevier,},
	year = {2013.},
	address = {Amsterdam :},
	url = {https://books.google.com.pk/books?id=D8a0KKU5288C&printsec=frontcover&dq=Structural+analysis+by+william&hl=en&sa=X&ved=2ahUKEwj_i6a6gMX2AhULr6QKHa7AB1sQ6AF6BAgHEAI#v=onepage&q=Structural%20analysis%20by%20william&f=false}
}