Media type: E-Article Title: Positron Annihilation in Z1 ‐Centers in Additively Coloured KCl:Ca Contributor: Popov, D. N.; Nancheva, N. M.; Minev, M. R.; Terzijsky, K. I. imprint: Wiley, 1981 Published in: physica status solidi (b) Language: English DOI: 10.1002/pssb.2221080136 ISSN: 0370-1972; 1521-3951 Keywords: Condensed Matter Physics ; Electronic, Optical and Magnetic Materials Origination: Footnote: