Authors: Herczeg, J Wehmann, E Bragg, RR Dias, PMT Hadjiev, G Werner, O Lomniczi, B

Citation: J. Herczeg et al., Two novel genetic groups (VIIb and VIII) responsible for recent Newcastle disease outbreaks in Southern Africa, one (VIIb) of which reached Southern Europe, ARCH VIROL, 144(11), 1999, pp. 2087-2099