@article { monboesoa2001, author = "Monteiro, T. and Boemare, C. and Soares, M. J. and Ferreira, R. A. Sá and Carlos, L. D. and Lorenz, K. and Vianden, R. and Alves, E.", title = "Photoluminescence and lattice location of Eu and Pr implanted GaN samples", year = "2001" }