1. Positron Annihilation in Metals
2. G.H. LOHNERT, R.T. SCHNEIDER, and W.M. SCHIKORR, “Experimental Investigations on Positron Annihilation in a Plasma,” Contract Nonr 580 (19), Naval Research (1970).
3. W.G. WOLFER, “On Positron Interaction with a Fully Ionized Gas,” PhD Dissertation, University of Florida (1969).