1. Sanders G, Ko WH, Jones R, Vamvakas S: A solid-state portable gastroesophageal reflux pH recorder (abstract). In Engineering in Medicine and Biology, 33rd Annual Conference, Washington, DC, October 1, 1980; sponsored by Alliance for Engineering in Medicine and Biology. Institute for Electrical and Electronic Engineers, 1980, p 54
2. Oxide, oxygen and sulfide electrodes;Ives,1961
3. Intramuscular pH needle electrode: a preliminary report;Mackenzie;J Surg Res,1974
4. Improved antimony-antimony (III) oxide pH electrodes;Edwell;Med Biol Eng Comput,1978