Amorphous manganese polyphosphates: preparation, characterization and incorporation of azo dyes - Oliveira, Luiz Fernando Cappa de; Silva, Maurício A. P.; Brandão, Adílson R.; Stephani, Rodrigo; Oliveira, Carlos Ivan R. de; Gonçalves, Rogéria Rocha; Barbosa, Anne Jacqueline; Barud, Hernane da Silva; Messaddeq, Younes; Ribeiro, Sidney José Lima (Journal of Sol-Gel Science and Technology, 2009)