APA (7th ed.) Citation

Appell, J. (2004). Nonlinear spectral theory. Walter de Gruyter.

Chicago Style (17th ed.) Citation

Appell, Jürgen. Nonlinear Spectral Theory. Berlin: Walter de Gruyter, 2004.

MLA (9th ed.) Citation

Appell, Jürgen. Nonlinear Spectral Theory. Walter de Gruyter, 2004.