APA (7th ed.) Citation

Griebel, M., Zenger, C., & Zimmer, S. (1992). Improved multilevel algorithms for full and sparse grid problems.

Chicago Style (17th ed.) Citation

Griebel, Michael, Christoph Zenger, and S. Zimmer. Improved Multilevel Algorithms for Full and Sparse Grid Problems. München, 1992.

MLA (9th ed.) Citation

Griebel, Michael, et al. Improved Multilevel Algorithms for Full and Sparse Grid Problems. 1992.