APA (7th ed.) Citation

Bock, I., Kodnár, R., & Lovíšek, J. An obstacle problem for a cylindrical shell.

Chicago Style (17th ed.) Citation

Bock, Igor, Rudolf Kodnár, and Ján Lovíšek. An Obstacle Problem for a Cylindrical Shell.

MLA (9th ed.) Citation

Bock, Igor, et al. An Obstacle Problem for a Cylindrical Shell.