Characterizing the subjective performance of the ITU-T 8 kb/s speech coding algorithm-ITU-T G.729. - Mark E. Perkins; Keith Evans; Dominique Pascal; Leigh A. Thorpe (IEEE Commun. Mag., 1997)

Speech transmission performance planning in hybrid IP/SCN networks. - Mark E. Perkins; Charles A. Dvorak; Barry H. Lerich; Joseph A. Zebarth (IEEE Commun. Mag., 1999)