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Elvander M, Vilcek S, Baule C, Uttenthal A, Ballagi-Pordány A, Belák S.Elvander M, et al. Among authors: ballagi pordany a.J Gen Virol. 1998 Dec;79 ( Pt 12):2939-46. doi: 10.1099/0022-1317-79-12-2939.J Gen Virol. 1998.PMID: 9880007
Ballagi-Pordány A, Wehmann E, Herczeg J, Belák S, Lomniczi B.Ballagi-Pordány A, et al.Arch Virol. 1996;141(2):243-61. doi: 10.1007/BF01718397.Arch Virol. 1996.PMID: 8634018