Assessing Vehicle Health Management Requirements for Unmanned Air Systems. - Andrew Heaton; Ip-Shing Fan; Craig Lawson; Jim McFeat; Julian Hill (Infotech@Aerospace, 2012)

Laser-Based Sensing of Trace-Level Methane in Agricultural and Environmental Air. - Brian J. Orr; Yabai He; Julian Hill (ICST, 2024)