APA

Balas J., Sládek J. & Sládek V. (1989). Stress analysis by boundary element methods. Amsterdam: Elsevier.

Chicago

Balas Ján, Sládek Ján and Sládek Vladimír. 1989. Stress analysis by boundary element methods. Amsterdam: Elsevier.

Harvard

Balas J., Sládek J. and Sládek V. (1989). Stress analysis by boundary element methods. Amsterdam: Elsevier.

MLA

Balas Ján, Sládek Ján and Sládek Vladimír. Stress analysis by boundary element methods. Amsterdam: Elsevier. 1989.