8CARTA J A, BUENO C, RAM REZ P. Statistical modelling of directional wind speeds using mixtures of van mises distribu- tions : Case study[ J ]. Energy Conversion and Management,2008,49 : 897-907.
9GRIMALDI S, SERINALDI F. Asymmetric copula in multivariate flood frequency analysis [ J ]. Advances in Water Resources ,2006,29 : 1155-1167.