@article{CHEB_2020_21_2_a19,
     author = {V. S. Matveev},
     title = {Quantum integrability for the {Beltrami--Laplace} operators of projectively equivalent metrics of arbitrary signatures},
     journal = {\v{C}eby\v{s}evskij sbornik},
     pages = {275--289},
     publisher = {mathdoc},
     volume = {21},
     number = {2},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CHEB_2020_21_2_a19/}
}