TY - JOUR AU - V. S. Matveev TI - Quantum integrability for the Beltrami--Laplace operators of projectively equivalent metrics of arbitrary signatures JO - Čebyševskij sbornik PY - 2020 SP - 275 EP - 289 VL - 21 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CHEB_2020_21_2_a19/ LA - en ID - CHEB_2020_21_2_a19 ER -