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On moments of ratios of quadratic forms in normal variables

Institution:	1. Climate Research Group, School of Geography, Planning and Environmental Management, The University of Queensland, Brisbane 4072, Australia;2. CSIRO Land and Water, 41 Boggo Road, Dutton Park, QLD 4102, Australia;3. CSIRO Land and Water, 37 Graham Road, Highett, VIC 3190, Australia;1. Dipartimento di Ingegneria Civile e Meccanica, Università di Cassino e del Lazio Meridionale, Via Di Biasio 43, 03043 Cassino, FR, Italy;2. Dipartimento di Ingegneria Civile, Design, Edilizia e Ambiente, Seconda Università di Napoli, Via Roma 29, 81031 Aversa, CE, Italy

Abstract:	Exact expressions for moments of ratios of quadratic forms in normal variables are considered. The emphasis is on their relationship with inverse moments of such quadratic forms. Multivariate extension of work of Cressie and Borkent (1986) is briefly explored.

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