Isaev, Alexey P. Max Planck Institute for Mathematics, Max Planck Society;
Sergeev, Sergei M. Max Planck Institute for Mathematics, Max Planck Society;
Isaev, A. P., & Sergeev, S. M. (2003). Quantum Lax operators and discrete 2+1-dimensional integrable models. Letters in Mathematical Physics, 64(1), 57-64.