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OLA FINANCIERA, Vol. 12 No. 33,    May-August 2019, is a quarterly publication, with international arbitration, edited by Universidad Nacional Autónoma de México by Instituto de Investigaciones Económicas, Ciudad Universitaria, Circuito Mario de la Cueva s/n, Ciudad de la Investigación en Humanidades, Coyoacán, C.P. 04510, México, D.F. Tel.+52 (55) 5623-0131, and Faculty of Economics, Ciudad Universitaria, Circuito Interior s/n, Coyoacán, C.P. 04510, México, D.F., www.olafinanciera.unam.mx, ola.financiera.unam@gmail.com Editor in charge: Dr. Sergio Cabrera Morales. Reservation of Rights to Exclusive Use: 04-2013-050912324700-203, ISSN electronic: 1870-1442. Responsible for the last update of this issue, Ing. Jesús Garrido López, Circuito Mario de la Cueva s/n, Ciudad de la Investigación en Humanidades, Ciudad Universitaria, Coyoacán, C.P. 04510, México D.F. date of last modification, May 03, 2019.

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