@book {519,
	title = {Getting to Yes: Negotiating Agreement Without Giving In},
	year = {2011},
	publisher = {Penguin Publishing Group},
	organization = {Penguin Publishing Group},
	isbn = {9781101539545},
	url = {http://www.penguinrandomhouse.com/books/324551/getting-to-yes-by-roger-fisher/9780143118756/},
	author = {Fisher, R. and Ury, W.L. and Patton, B.}
}
