Spicher

Ionisation of Atomic Hydrogen by Positron Impact

Olsson, W. Raith, Raith, 1987 .

Measurement of positronium formation in positron collisions with hydrogen atoms.

Lynn, Becker, Weber, 1992, Physical review letters.

Differential elastic scattering of positrons from argon atoms at low energies.

Schwab, Raith, Sinapius, 1988, Physical review letters.