@article{JLT_2006_16_2_JLT_2006_16_2_a5,
     author = {C. Vizman },
     title = {Central {Extensions} of the {Lie} {Algebra} of {Symplectic} {Vector} {Fields}},
     journal = {Journal of Lie theory},
     pages = {297--309},
     publisher = {mathdoc},
     volume = {16},
     number = {2},
     year = {2006},
     url = {http://geodesic.mathdoc.fr/item/JLT_2006_16_2_JLT_2006_16_2_a5/}
}