Ángel Martin, Miguel, Wolfgang Rojas, José Luis Eráusquin, Dayana Yupanqui, and Édgar Vera. 2009. “Derivatives Usage by Non-Financial Firms in Emerging Markets: The Peruvian Case”. Journal of Economics, Finance and Administrative Science 14 (27):73-86. https://doi.org/10.46631/jefas.2009.v14n27.05.