@book{36452,
	author = {Umair Saleem (405113)},
	title = {Generalization of the wiener index and characterization of trees},
	publisher = {(unpublished)},
	year = {2021},
	address = {Lahore},
	note = {Submitted in fulfillment of the requirements for the degree of Master of Philosophy in Mathematics to the department of Mathematics.}
}