D. L. Garcia, G. F. da Silva, A. L. G. de Souza, J. P. M. Bisneto, and E. de S. Silva, “Geographical Indication: a proposal for measuring centrality”, Int J Innov Educ Res, vol. 7, no. 12, pp. 462–473, Dec. 2019, doi: 10.31686/ijier.vol7.iss12.2096.