Human immunodeficiency virus-infected individuals contain provirus in small numbers of peripheral mononuclear cells and at low copy numbersPeter Simmonds, Andrew Brown, Christopher A. Ludlam et al.|Journal of Virology|1990Cited by 591
Analysis of sequence diversity in hypervariable regions of the external glycoprotein of human immunodeficiency virus type 1Peter Simmonds, Andrew Brown, Peter Balfe et al.|Journal of Virology|1990Cited by 304
Concurrent evolution of human immunodeficiency virus type 1 in patients infected from the same source: rate of sequence change and low frequency of inactivating mutationsPeter Balfe, Andrew Brown, Peter Simmonds et al.|Journal of Virology|1990Cited by 221