TY - JOUR T1 - Negatively charged donors in flat quantum dots JO - Brazilian Journal of Physics A1 - García, Luis F. A1 - Marín, Jairo H. A1 - Mikhailov, Ilia D. SN - 0103-9733 UL - 10.1590/S0103-97332006000600021 VL - 36 Y1 - 2006 PB - Brasil ER -