1.
D.B. Dhaigude, N.B. Jadhav, J.A. Nanware. Method of upper lower solutions for nonlinear system of fractional differential equations and applications. Malaya J. Mat. [Internet]. 2018 Jul. 1 [cited 2024 Jul. 16];6(03):467-72. Available from: https://www.malayajournal.org/index.php/mjm/article/view/821