A comparison of simple hierarchy and grid metaphors for option layouts on small-size screens. - John Christie; Raymond M. Klein; Carolyn R. Watters (Int. J. Hum. Comput. Stud., 2004)

Moisture content: What is it and how can it be measured? - John Christie; Ian G. Platt (SAS, 2014)

A water content sensor for baked products. - Ian M. Woodhead; John Christie; Kenji Irie; Richard Fenton (SAS, 2014)