Remarks on inhomogeneous elliptic problems arising in astrophysics. Calahorrano, Marco; Mena, Hermann — 2005 Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
Multiple solutions for inhomogeneous nonlinear elliptic problems arising in astrophyscs. Calahorrano, Marco; Mena, Hermann — 2004 Electronic Journal of Differential Equations (EJDE) [electronic only]
A discontinuous problem with quasilinear operator. Calahorrano Recalde, Marco; Mayorga Zambrano, Juan — 2001 Revista Colombiana de Matemáticas
Multivalued nonpositone problems David Arcoya; Marco Calahorrano — 1990 Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni In this note, the existence of non-negative solutions for some multivalued non-positone elliptic problems is studied.
Global branching for discontinuous problems Antonio Ambrosetti; Recalde Marco Calahorrano; Fernando R. Dobarro — 1990 Commentationes Mathematicae Universitatis Carolinae