About the Authors

Xosé A. Rodríguez


Affiliation Department of Quantitative Economics, University of Santiago de Compostela, Santiago de Compostela, Spain

Yahia H. Elasraag

Affiliation Department of Agricultural Economics, Cairo University, Gammaa St., Giza, 12613, Egypt

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: XAR YHE. Performed the experiments: XAR YHE. Analyzed the data: XAR. Contributed reagents/materials/analysis tools: XAR YHE. Wrote the paper: XAR.