USMAN, Yahaya P. The Return to Scale Efficiencies of the Nigerian Credit Institutions Finance on the Agricultural Sector. International Journal of Social Science and Economics Invention, [S. l.], v. 5, n. 06, p. 67 to 82, 2019. Disponível em: https://ijssei.in/index.php/ijssei/article/view/127. Acesso em: 3 apr. 2025.