ELECTRONIC BAND GAP REDUCTION AND INTENSE LUMINESCENCE IN CO AND MN ION-IMPLANTED SIO2 ArticleGreen R.J., St. Onge D.J., Moewes A., Zatsepin D.A., Kurmaev E.Z., Gavrilov N.V., Zatsepin A.F.Journal of Applied Physics. Vol. 115. 2014. 103708 p..
