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Sarkar MAH. Positivity Expansion to Signed Solution for Doubly Nonlinear Parabolic Equations. Jn. Uni. J. Sci. [Internet]. 2024 Feb. 7 [cited 2025 Oct. 19];10(1):64-7. Available from: https://www.banglajol.info/index.php/JnUJSci/article/view/71256