On the existence of [M, n] group codes for the Gaussian channel with [M, n] odd. - Charles P. Downey; John K. Karlof (IEEE Trans. Inf. Theory, 1977)

Optimal [M, 3] group codes for the Gaussian channel (Corresp.). - Charles P. Downey; John K. Karlof (IEEE Trans. Inf. Theory, 1978)

Group codes for the Gaussian broadcast channel with two receivers. - Charles P. Downey; John K. Karlof (IEEE Trans. Inf. Theory, 1980)

Group codes for the M-receiver Gaussian broadcast channel. - Charles P. Downey; John K. Karlof (IEEE Trans. Inf. Theory, 1983)

Permutation codes for the Gaussian channel. - John K. Karlof (IEEE Trans. Inf. Theory, 1989)

Decoding spherical codes for the Gaussian channel. - John K. Karlof (IEEE Trans. Inf. Theory, 1993)

Large scale geometric programming: An application in coding theory. - Yaw O. Chang; John K. Karlof (Comput. Oper. Res., 1994)

Bilevel programming applied to the flow shop scheduling problem. - John K. Karlof; Wei Wang (Comput. Oper. Res., 1996)

Optimal permutation codes for the Gaussian channel. - John K. Karlof; Yaw O. Chang (IEEE Trans. Inf. Theory, 1997)

Representing group codes as permutation codes. - Ezio Biglieri; John K. Karlof; Emanuele Viterbo (IEEE Trans. Inf. Theory, 1999)