Vanden Haesevelde M, Decourt JL, De Leys RJ, Vanderborght B, van der Groen G, van Heuverswijn H, Saman E. Genomic cloning and complete sequence analysis of a highly divergent African human immunodeficiency virus isolate. J Virol. 1994 Mar;68(3):1586–96. doi: 10.1128/jvi.68.3.1586-1596.1994.