Ferreira, Wanessa Resende, and Marli A. Ranal. “Seed Germination and Seedling Growth of <i>Brassica chinensis< i> L. Var. <i>parachinensis< I> (Bailey) Sinskaja (flowering White Cabbage)”. Pesquisa Agropecuaria Brasileira, vol. 34, no. 3, Mar. 1999, pp. 353-61, doi:10.1590/S1678-3921.pab1999.v34.5189.