Cita APA

Huang, X., & Chen, J. (2006). On PTAS for planar graph problems. Web

Citación estilo Chicago

Huang, Xiuzhen, and Jianer Chen. On PTAS for Planar Graph Problems. 2006.

Cita MLA

Huang, Xiuzhen, and Jianer Chen. On PTAS for Planar Graph Problems. 2006.