J.A. NANWARE; B.D. DAWKAR. Method of lower - upper solutions of fractional differential equations with initial time difference and applications. Malaya Journal of Matematik, India, v. 8, n. 03, p. 1196–1199, 2020. DOI: 10.26637/MJM0803/0080. Disponível em: https://www.malayajournal.org/index.php/mjm/article/view/1585. Acesso em: 16 jul. 2024.