A GPSS model of a unit load AS/R system and shipping department. - John S. Carson II; C. H. Wysowski; W. A. Johnson; N. Wilson (WSC, 1983)

Self-Monitoring and Self-Assessing Atomic Clocks. - Y. C. Chan; W. A. Johnson; S. K. Karuza; A. M. Young; J. C. Camparo (IEEE Trans. Instrum. Meas., 2010)