Catching the Cuckoo: Verifying TPM Proximity Using a Quote Timing Side-Channel - (Short Paper). - Russell A. Fink; Alan T. Sherman; Alexander O. Mitchell; David C. Challener (TRUST, 2011)

Blockchain Basics and Suitability: A Primer for Program Managers. - David C. Challener; Maria E. Vachino; James P. Howard II; Christina K. Pikas; Anil John (J. Inf. Technol. Manag., 2019)