SpringerLink (Online service), Matzeu, M., & Vignoli, A. (1995). Topological nonlinear analysis: Degree, singularity, and variations. Birkhäuser.
Chicago Style (17th ed.) CitationSpringerLink (Online service), M. Matzeu, and Alfonso Vignoli. Topological Nonlinear Analysis: Degree, Singularity, and Variations. Boston: Birkhäuser, 1995.
MLA (9th ed.) CitationSpringerLink (Online service), et al. Topological Nonlinear Analysis: Degree, Singularity, and Variations. Birkhäuser, 1995.
Warning: These citations may not always be 100% accurate.