Coster, C., & Habets, P. (2006). Two-point boundary value problems lower and upper solutions. Elsevier.
Chicago Edition CitationCoster, C.De, i P. Habets. Two-point Boundary Value Problems Lower and Upper Solutions. Amsterdam: Elsevier, 2006.
Cita MLACoster, C.De, i P. Habets. Two-point Boundary Value Problems Lower and Upper Solutions. Elsevier, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.