- R. M. Kashaev, “The Non-Compact Quantum Dilogarithm and the Baxter Equations”, Journal of Statistical Physics, 102, № 3-4, 2001,
923 
- A. YU. VOLKOV, “Quantum Lattice KdV Equation”, Letters in Mathematical Physics, 39, № 4, 1997,
313 - A. YU. VOLKOV, “Beyond the ‘Pentagon Identity’”, Letters in Mathematical Physics, 39, № 4, 1997,
393