R.E. Boltnev, G.B. Gumenchuk, A.N. Ponomaryov, E.V. Savchenko, S.A. Uyutnov, I.V. Khyzhniy, D.M. Lee, V.V. Khmelenko, A.A. Pelmenev, I.N. Krushinskaya, I.B. Bykhalo, and V.E. Bondybey, Comparative study of thermostimulated luminescence and electron emission of nitrogen nanoclusters and films, Low Temp. Phys. 39, (2013) [Fiz. Nizk. Temp. 39, 580-585, (2013)] DOI: https://doi.org/10.1063/1.4807150.