@article{VMUMM_2005_1_a3,
     author = {A. V. Mikhalev and I. A. Pinchuk},
     title = {Universal central extensions of conformal {Lie} algebras},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {26--31},
     publisher = {mathdoc},
     number = {1},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2005_1_a3/}
}