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2. Yield of strawberry cultivars polinized by jatai bees under protected environment;Antunes O.T;Horticultura Brasileira
3. Africanized honey bees (Hymenoptera: Apidae) have a greater fidelity to sunflowers than European bees;Basualdo M;Journal of Economic Entomologic
4. Seed rules for production, trading and use; Law nº 10.711, of August 5, decree nº 5.153, of July 23, 2004
5. Effect of potassic on the production and seed quality of sunflower;Campos M.S.O;Revista Brasileira de Sementes