- Mircea Pigli, “Adelic integrable systems”, Journal of Mathematical Physics, 36, № 12, 1995, 6829
- NORMAN E. HURT, “THE PRIME GEODESIC THEOREM AND QUANTUM MECHANICS ON FINITE VOLUME GRAPHS: A REVIEW”, Rev. Math. Phys., 13, № 12, 2001, 1459
- L. O. Chekhov, “Scattering on univalent graphs from theL-function point of view”, Theor Math Phys, 103, № 3, 1995, 723
- Леонид Олегович Чехов, Leonid Olegovich Chekhov, “Спектральная задача на графах и $L$-функции”, УМН, 54, № 6, 1999, 109