TY - JOUR T1 - Comment on the generation number in orbifold compactifications JO - Communications in Mathematical Physics UR - https://doi.org/10.1007/bf02096954 PY - 1993/05/01 AU - Erler J AU - Klemm A ED - DO - DOI: 10.1007/bf02096954 PB - Springer Science and Business Media LLC VL - 153 IS - 3 SP - 579 EP - 604 Y2 - 2026/06/03 ER -