Performance of a Long Troposcatter Link in the Southeast Asia Equatorial Region. - Y. F. Lum; C. H. Lim (IEEE Trans. Commun., 1974)

Canadian videotex system. - Herbert G. Bown; C. Douglas O'Brien; Y. F. Lum; William Sawchuk; J. R. Storey (Comput. Commun., 1979)