@book{20526,
	author = {Gupta, D.},
	title = {Introduction to Problem Solving and Programming:},
	publisher = {Indian Insitiute of Technology},
	address = {Kanpur},
	url = {http://video.snu.edu.in/index.php?id=1025&cat=Computer Science and  Engineering&course=Introduction to Problem Solving and Programming&url=Phase1_Video/106104074/lec18.mp4}
}