Kozak, O. O.     Dependence of photoluminescene intensity on exitation level [Текст] / O.O. Kozak, O.I. Dacenko // Fifteenth International Young Scientists Conference "Optics & High Technology Material Science SPO 2014" : devoted to 180th anniversary of Taras Shevchenko Nat. Univ. of Kyiv & 75th anniversary of its Chair of Optics, Kyiv, Ukraine, Oct. 23-26, 2014 : / Taras Shevchenko Nat. Univ. of Kyiv (TSNUK) [etc.] ; [progr. comm.: O.K. Zakusylo (head) et al.]. — Kyiv : Київський університет, 2014. — P. 54-55.