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@article{MOMA_1986__101_178275, author = {Fulvio Ricci}, title = {A {Contraction} of {S} {U} (2) to the {Heisenberg} {Group.}}, journal = {Monatshefte f\"ur Mathematik}, pages = {211--226}, publisher = {mathdoc}, volume = {101}, year = {1986}, zbl = {0588.43007}, url = {http://geodesic.mathdoc.fr/item/MOMA_1986__101_178275/} }
Fulvio Ricci. A Contraction of S U (2) to the Heisenberg Group.. Monatshefte für Mathematik, Tome 101 (1986), pp. 211-226. http://geodesic.mathdoc.fr/item/MOMA_1986__101_178275/