@inproceedings{inproceedingsb125569d, title = {Electron and hole states and optical properties of artificial quantum ring atoms and molecules}, author = {Piacente, Giovanni and Marques, Gilmar E. and López-Richard, Victor and Hai, Guo-Qiang}, year = {2011}, publisher = {Sociedade Brasileira de Física - SBF}, booktitle = {Encontro de Física} }