Digital communications by radio. - Kamilo Feher; Ronald P. Tetarenko; Paul R. Hartmann; Vasant K. Prabhu (IEEE Trans. Commun., 1979)

Digital radio technology: Present and future. - Paul R. Hartmann (IEEE Commun. Mag., 1981)

An Overview of High Capacity Radio Transmission Systems in North America. - Steve Barber; Paul R. Hartmann (ICC (2), 1984)

64-QAM Digital Radio Transmission System Integration and Performance. - J. A. Crossett; Paul R. Hartmann (ICC (2), 1984)