@article{TMF_1974_20_2_a6,
     author = {Dao Vong Dyc},
     title = {General formulas and selection rules for a~conformally covariant expansion of an~operation product},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {202--210},
     publisher = {mathdoc},
     volume = {20},
     number = {2},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1974_20_2_a6/}
}