@article{FAA_1973_7_3_a10,
     author = {R. J. Grabovskaya and S. G. Krein},
     title = {On the formula for the permutation of functions of operators representing a {Lie} algebra},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {81},
     publisher = {mathdoc},
     volume = {7},
     number = {3},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1973_7_3_a10/}
}