@book{10932,
	author = { Patra, Nihar Ranjan.	},
	title = {Advance Geotechnological Engineering ( Pdf Lecture Module 21)},
	publisher = {Indian Institute of Technology , Kanpur.},
	address = {IIT Kanpur},
	url = {http://nptel.ac.in/courses/105104132/Module4/lecture21.pdf}
}