Zohaib Hassan, MS Mathematics, 2021-2023, Supervised by Dr. Umber Sheikh Analysis of string fluid collapse in f (R)=aR4 gravity / Zohaib Hassan - Faisalabad : Department of Mathematics, Faisalabad Campus, University of Education, 2023 - 78 p. ISBN: (hbk) Subjects--Topical Terms: Mathematics--Analysis--String--Fluid--Gravity Dewey Class. No.: 513.5 / An134