Authors: Z.Bern, J.S.Rozowsky, B.Yan First author: Z.Bern Journal title: Phys. Lett. Volume: B401 Start page: 273 Year: 1999 Archive ID: oai:arXiv:hep-ph/9702424 srcText: [1] Z. Bern, J.S.Rozowsky and B. Yan, Phys. Lett. B401, 271 (1999) [hep-th/9702424]