P. F. Kellen

Beam Properties Of A CO2 Continuous Wave (CW) Electric Discharge Laser (EDL)

M. J. Yoder, P. F. Kellen, A. C. Mattsson, 1978, Other Conferences.

Comparison of Methods for Processing Short-Exposure Data from Large Telescopes

P. F. Kellen, Arthur M. Schneiderman, M. Miller, 1973 .