Positive solutions for a class of implicit and discontinuous second order functional differential equations with singularities. - Alberto Cabada; José Ángel Cid; Rodrigo López Pouso (Appl. Math. Comput., 2003)

On the sign of the Green's function associated to Hill's equation with an indefinite potential. - Alberto Cabada; José Ángel Cid (Appl. Math. Comput., 2008)

Does Lipschitz with Respect to x Imply Uniqueness for the Differential Equation y′ = f(x, y)? - José Ángel Cid; Rodrigo López Pouso (Am. Math. Mon., 2009)

Computation of Green's functions for boundary value problems with Mathematica. - Alberto Cabada; José Ángel Cid; Beatriz Máquez-Villamarín (Appl. Math. Comput., 2012)

On comparison principles for the periodic Hill's equation. - Alberto Cabada; José Ángel Cid (J. Lond. Math. Soc., 2012)

Green's functions and spectral theory for the Hill's equation. - Alberto Cabada; José Ángel Cid; Lucía López-Somoza (Appl. Math. Comput., 2016)

Integration by Parts and by Substitution Unified with Applications to Green's Theorem and Uniqueness for ODEs. - José Ángel Cid; Rodrigo López Pouso (Am. Math. Mon., 2016)

Lyapunov stability of periodic solutions of Brillouin type equations. - Feng Wang; José Ángel Cid; Shengjun Li; Miroslawa Zima (Appl. Math. Lett., 2020)