APA (7th ed.) Citation

Hejhal, D. A. (1992). Eigenvalues of the Laplacian for Hecke triangle groups.

Chicago Style (17th ed.) Citation

Hejhal, Dennis A. Eigenvalues of the Laplacian for Hecke Triangle Groups. Providence, RI, 1992.

MLA (9th ed.) Citation

Hejhal, Dennis A. Eigenvalues of the Laplacian for Hecke Triangle Groups. 1992.

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