Bettoni, M. M.; Mógor, Átila F.; Dechamps, C.; Silva, V. C. P. da; Sass, M. D.; Fabbrin, E. G. dos S. Growth and Production of Onion Cultivars in Organic System in a Nontraditional Planting Period. Semina: Ciênc. Agrár. 2013, 34, 2139-2152.