Enhanced 'Eu POT.3+' emission in aqueous phosphotungstate colloidal systems: stabilization of polyoxometalate nanostructures - Barbosa, Anne Jacqueline; Maia, Lauro June Queiroz; Montanari, Bianca; Gonçalves, Rogéria Rocha; Messaddeq, Younés; Ferreira, R. A. S.; Carlos, Luís D.; Ribeiro, Sidney José Lima (Langmuir, 2010)