APA (7th ed.) Citation

Ehrig, H., & Mahr, B. (1980). Solvability and complexity of algebraic implementation problems.

Chicago Style (17th ed.) Citation

Ehrig, Hartmut, and Bernd Mahr. Solvability and Complexity of Algebraic Implementation Problems. Berlin, 1980.

MLA (9th ed.) Citation

Ehrig, Hartmut, and Bernd Mahr. Solvability and Complexity of Algebraic Implementation Problems. 1980.

Warning: These citations may not always be 100% accurate.