The Hummingbird minipositioner-providing three-axis motion at 50 g's with low reactions. - John P. Karidis; Gerard McVicker; Joseph P. Pawletko; Li-Cheng Zai; Michael Philip Goldowsky; R. E. Brown; Ralph R. Comulada (ICRA, 1992)

Control of a hummingbird minipositioner with a multi-transputer MARC controller. - Li-Cheng Zai; Lawrence F. Durfee; D. G. Manzer; J. P. Karadis; M. P. Mastro; L. W. Landerman (ICRA, 1992)