PET: a proton/electron telescope for studies of magnetospheric, solar, and galactic particles. - Walter R. Cook; Alan C. Cummings; Jay R. Cummings; Thomas L. Garrard; Branislav Kecman; Richard A. Mewaldt; Richard S. Selesnick; Edward C. Stone; Daniel N. Baker; Tycho T. von Rosenvinge; J. Bernard Blake; Linwood B. Callis (IEEE Trans. Geosci. Remote. Sens., 1993)