APA (7th ed.) Citation
Böhme, T., Harant, J., & Tkáč, M. More than One Tough Chordal Planar Graphs are Hamiltonian.
Chicago Style (17th ed.) Citation
Böhme, Thomas, Jochen Harant, and Michal Tkáč. More than One Tough Chordal Planar Graphs Are Hamiltonian.
MLA (9th ed.) Citation
Böhme, Thomas, et al. More than One Tough Chordal Planar Graphs Are Hamiltonian.
Warning: These citations may not always be 100% accurate.