APA (7th ed.) Citation

Eisenstat, S. C. (1980). Efficient implementation of a class of preconditioned conjugate gradient methods.

Chicago Style (17th ed.) Citation

Eisenstat, Stanley C. Efficient Implementation of a Class of Preconditioned Conjugate Gradient Methods. [New Haven, Conn.], 1980.

MLA (9th ed.) Citation

Eisenstat, Stanley C. Efficient Implementation of a Class of Preconditioned Conjugate Gradient Methods. 1980.