Permutation codes for the Gaussian broadcast channel with two receivers. - Chris Heegard; Hugo E. dePedro; Jack K. Wolf (IEEE Trans. Inf. Theory, 1978)

A Spread-Spectrum Simulcast MF Radio Network. - Arthur A. Giordano; Henry A. Sunkenberg; Hugo E. dePedro; Peter Stynes; David W. Brown; Sang C. Lee (IEEE Trans. Commun., 1982)