TY - JOUR AU - Braga, Diogo AU - Calmon, Wilson TI - Periodic Gamma Autoregressive Model: An application to the Brazilian hydroelectric system JO - RAIRO - Operations Research - Recherche Opérationnelle PY - 2017 SP - 469 EP - 483 VL - 51 IS - 2 PB - EDP-Sciences UR - http://www.numdam.org/articles/10.1051/ro/2016035/ DO - 10.1051/ro/2016035 LA - en ID - RO_2017__51_2_469_0 ER -