@inproceedings{Ferrara:2000+X, author = "Ferrara, Sergio", title = "{Superspace Representations of SU(2,2/N) Superalgebras and Multiplet Shortening}", doi = "10.22323/1.004.0016", booktitle = "Proceedings of Quantum aspects of gauge theories, supersymmetry and unification {\textemdash} PoS(tmr99)", year = 2000, volume = "004", pages = "016" }