Published: 2018-06-28

DOI: https://doi.org/10.19109/ieconomics.v4i1.1922
DOI: https://doi.org/10.19109/ieconomics.v4i1.1924
DOI: https://doi.org/10.19109/ieconomics.v4i1.2181
DOI: https://doi.org/10.19109/ieconomics.v4i1.1849
DOI: https://doi.org/10.19109/ieconomics.v4i1.1852
DOI: https://doi.org/10.19109/ieconomics.v4i1.2281
DOI: https://doi.org/10.19109/ieconomics.v4i1.2280