L. M. dos Santos, M. A. M. Ferreira, L. A. Abrantes, and S. de F. R. Silveira, “Supply of Credit Investigation into Micro and Small Enterprises in the Minas Gerais State: an approach by strategic groups”, Rev. Bras. Gest. Neg., vol. 11, no. 31, pp. 200–216, Jun. 2009.