APA (7th ed.) Citation

Keyfitz, B. L., & Shearer, M. (1990). Nonlinear evolution equations that change type. Springer-Verlag.

Chicago Style (17th ed.) Citation

Keyfitz, Barbara Lee, and Michael Shearer. Nonlinear Evolution Equations That Change Type. New York: Springer-Verlag, 1990.

MLA (8th ed.) Citation

Keyfitz, Barbara Lee, and Michael Shearer. Nonlinear Evolution Equations That Change Type. Springer-Verlag, 1990.

Warning: These citations may not always be 100% accurate.