1. Positron Solid State Physics. Proc. of the International School of Physics “Enrico Fermi.” Course LXXXIII. Eds. W. Brandt and A. Dupasquier (North Holland, 1983).
2. Positrons in Solids;Hautojärvi,1979
3. Interaction of positron beams with surfaces, thin films, and interfaces
4. Electronic structure and positron states at vacancies in Si and GaAs