APA (7th ed.) Citation

Bunse-Gerstner, A., Byers, R., & Mehrmann, V. (1987). A quaternion QR algorithm.

Chicago Style (17th ed.) Citation

Bunse-Gerstner, Angelika, Ralph Byers, and Volker Mehrmann. A Quaternion QR Algorithm. Bielefeld, 1987.

MLA (9th ed.) Citation

Bunse-Gerstner, Angelika, et al. A Quaternion QR Algorithm. 1987.