An effective approach to VMD at one loop order and the departures from ideal mixing for vector mesons M. Benayoun, L. DelBuono, Ph. Leruste and H.B. O'Connell Eur. Phys. J. C, 17 2 (2000) 303-321 Published online: 31 August 2000 DOI: 10.1007/s100520000463