K. L. Perrin, S. Saxmose Nielsen, T. Martinussen, and M. F. Bertelsen, “Quantification and risk factor analysis of elephant endotheliotropic herpesvirus-haemorrhagic disease fatalities in Asian elephants (Elephas maximus) in Europe (1985-2017)”, JZAR, vol. 9, no. 1, pp. 8–13, Jan. 2021.