@article{TMF_1993_97_3_a1,
     author = {S. A. Bychkov and D. V. Yur'ev},
     title = {Three algebraic structures of quantum projective ($\mathrm{sl}(2,\mathbb C)$-invariant) field theory},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {336--347},
     publisher = {mathdoc},
     volume = {97},
     number = {3},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1993_97_3_a1/}
}