Published: 31-12-2016

DOI: https://doi.org/10.19109/td.v21i2.771
DOI: https://doi.org/10.19109/td.v21i2.950
DOI: https://doi.org/10.19109/td.v21i2.1030
DOI: https://doi.org/10.19109/td.v21i2.951
DOI: https://doi.org/10.19109/td.v21i2.1027
DOI: https://doi.org/10.19109/td.v21i2.1031
DOI: https://doi.org/10.19109/td.v21i2.1029
DOI: https://doi.org/10.19109/td.v21i2.1028