Published: 2010-12-16

DOI: https://doi.org/10.29122/jstmc.v11i2.2180
DOI: https://doi.org/10.29122/jstmc.v11i2.2181
DOI: https://doi.org/10.29122/jstmc.v11i2.2182
DOI: https://doi.org/10.29122/jstmc.v11i2.2183