R. . Bowichean, . S. Thanachit, S. . Anusontpornperm, and I. . Kheoruenromne, “Green Manuring Effect on Yield of Cassava-Sweet Corn Sequential Cropping on Degraded Sandy Soil, Northeast Thailand”, Agr. Nat. Resour., vol. 47, no. 3, pp. 342–357, Jun. 2013.