%0 Journal Article %A Braga, Diogo %A Calmon, Wilson %T Periodic Gamma Autoregressive Model: An application to the Brazilian hydroelectric system %J RAIRO - Operations Research - Recherche Opérationnelle %D 2017 %P 469-483 %V 51 %N 2 %I EDP-Sciences %U http://www.numdam.org/articles/10.1051/ro/2016035/ %R 10.1051/ro/2016035 %G en %F RO_2017__51_2_469_0