Eran Bacharach et al.: Characterization of a Novel Orthomyxo-like Virus Causing Mass Die-Offs of Tilapia. In: mBio. Band 7, Nr. 2, e00431-16, 2016, doi:10.1128/mBio.00431-16
J. F. Regan, Y. Liang, T. G. Parslow: Defective assembly of influenza A virus due to a mutation in the polymerase subunit PA.Journal of Virology. Band 80, Nr. 1, Januar 2006, S. 252–261; PMID 16352550 (englisch).