Published: 01-06-2014

DOI: https://doi.org/10.19109/td.v19i01.5
DOI: https://doi.org/10.19109/td.v19i01.6
DOI: https://doi.org/10.19109/td.v19i01.9
DOI: https://doi.org/10.19109/td.v19i01.8
DOI: https://doi.org/10.19109/td.v19i01.10
DOI: https://doi.org/10.19109/td.v19i01.11
DOI: https://doi.org/10.19109/td.v19i01.12
DOI: https://doi.org/10.19109/td.v19i01.13