@book{247359,
	author = {Davvaz, Bijan,},
	title = {Semihypergroup theory / },
	publisher = {Academic Press is an imprint of Elsevier,},
	year = {2016.},
	address = {London, UK :},
	url = {http://www.sciencedirect.com/science/book/9780128098158}
}