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First Author:
 
Matheus O. de Alencar
Ph.D. student in Applied Economics from Rio Grande do Sul Federal University (UFRGS).
matheusalencar29@gmail.com
 
Fortaleza, Brazil
 
 
 

Second Author:

Jair A. Araujo
Professor in the Agricultural Economics Department of Ceará Federal University (UFC).
jaraujoce@gmail.com
 
Fortaleza, Brazil
 
 
 

Third Author:

Wellington R. Justo
Professor in the Department of Economics of Cariri Regional University (URCA).
justowr@yahoo.com.br
 
Recife, Brazil
 
 
 

Fourth Author:

Celina Santos de Oliveira
Ph.D. in Economics from Paraíba Federal University (UFPB).
oli.celina@gmail.com