Published: 2018-12-27

DOI: https://doi.org/10.19109/ieconomics.v4i2.2583
DOI: https://doi.org/10.19109/ieconomics.v4i2.2562
DOI: https://doi.org/10.19109/ieconomics.v4i2.2518
DOI: https://doi.org/10.19109/ieconomics.v4i2.2736
DOI: https://doi.org/10.19109/ieconomics.v4i2.3039
DOI: https://doi.org/10.19109/ieconomics.v4i2.3155