Phylogenetic Dependency Networks: Inferring Patterns of CTL Escape and Codon Covariation in HIV-1 Gag. - Jonathan M. Carlson; Zabrina L. Brumme; Christine M. Rousseau; Chanson J. Brumme; Philippa Matthews; Carl Myers Kadie; James I. Mullins; Bruce D. Walker; P. Richard Harrigan; Philip J. R. Goulder; David Heckerman (PLoS Comput. Biol., 2008)