@book{10911,
	author = { Patra, Nihar Ranjan.	},
	title = {Advance Geotechnological Engineering ( Pdf Lecture Module 5)},
	publisher = {;Indian Institute of Technology, Kanpur.},
	address = {IIT Kanpur.},
	url = {http://nptel.ac.in/courses/105104132/Module2/lecture5.pdf}
}