1. Existence of solutions and Ulam stability for Caputo type sequential fractional differential equations of order (2,3);Ahmad B;Int J Anal Appl,2017
2. Existence and stability results for nonlinear boundary value problem for implicit differential equations of fractional order, Moroccan;Benchohraa M;J Pure and Appl Anal,2015
3. Existence results for a fractional functional differential equation of mixed type;Darwich MA;Comm Appl Nonl Anal,2008