@book{24645,
	author = {Qamar Abbas (18257)},
	title = {On generalized roughness in semihypergroups},
	publisher = {(unpublished)},
	year = {2019},
	address = {Islamabad},
	note = {Submitted in fulfillment of the requirements for the degree of Master of Philosophy in Mathematics to the Faculty of Basic Sciences and Humanities.}
}