APA (7th ed.) Citation

Engel, K., & Nagel, R. A short course on operator semigroups.

Chicago Style (17th ed.) Citation

Engel, Klaus-Jochen, and Rainer Nagel. A Short Course on Operator Semigroups.

MLA (8th ed.) Citation

Engel, Klaus-Jochen, and Rainer Nagel. A Short Course on Operator Semigroups.

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