Some Properties of Spectral Binary Relations. - Karim Belaid; Bahri Cherif; Othman Echi (RelMiCS, 1997)

A New Proof of Existence of Positive Weak Solutions for Sublinear Kirchhoff Elliptic Systems with Multiple Parameters. - Salah Mahmoud Boulaaras; Rafik Guefaifia; Bahri Cherif; Sultan S. Alodhaibi (Complex., 2020)