I. V. Volovich, Remarks on the complete integrability of quantum and classical dynamical systems, 2019, 15 pp., arXiv: 1911.01335
I. V. Volovich, “Ot $p$-adicheskikh strun k etalnym”, Tr. MIAN, 203 (1994), 41–47
M. Ohya, I. Volovich, Mathematical foundations of quantum information and computation and its applications to nano- and bio-systems, Springer, Dordrecht, 2011, 759 pp.