1. Handbook of Porous Silicon, Ed. by L. Canham (Springer Int., Switzerland, 2014).
2. O. Bisi, S. Ossicini, and L. Pavesi, Surf. Sci. Rep. 38, 1 (2000).
3. E. S. Demidov, V. V. Karzanov, and V. G. Shengurov, JETP Lett. 67, 839 (1998).
4. E. S. Demidov and N. E. Demidova, Vestn. NNGU, Ser. B 1 (8), 22 (2005).
5. N. E. Demidova, Extended Abstract of Cand. Sci. Dissertation (Nizhegor. State Univ., Nizh. Novgorod, 2010).