TY - JOUR AU - Campoamor Stursberg, Otto-Rudwig PY - 2004 SN - 0162-5519 UR - https://hdl.handle.net/20.500.14352/50745 T2 - Hadronic Journal M2 - 193 PB - Hadronic Press TI - On the Preservation of the Quantity N(G)for Discrete Zn-Graded Contractions of Lie Algebras TY - journal article VL - 27 ER -