Caputo derivatives of fractional variable order: Numerical approximations. - Dina Tavares; Ricardo Almeida 001; Delfim F. M. Torres (Commun. Nonlinear Sci. Numer. Simul., 2016)

Constrained fractional variational problems of variable order. - Dina Tavares; Ricardo Almeida 001; Delfim F. M. Torres (IEEE CAA J. Autom. Sinica, 2017)

Combined fractional variational problems of variable order and some computational aspects. - Dina Tavares; Ricardo Almeida 001; Delfim F. M. Torres (J. Comput. Appl. Math., 2018)