Central groupoids, central digraphs, and zero-one matrices A satisfying A2=J . - Frank E. Curtis; John Drew; Chi-Kwong Li; Daniel Pragel (J. Comb. Theory A, 2004)

A simulation model for the analysis of end-to-end support of unmanned aerial vehicles. - Mahyar A. Amouzegar; John Drew; Robert S. Tripp (Int. J. Appl. Decis. Sci., 2010)