Articles
 DOI :
	
	https://doi.org/10.32531/jvoe.v2i1.40
 DOI :
	
	https://doi.org/10.32531/jvoe.v2i1.40
	 Abstract views: 700 ,
 Abstract views: 700 ,  PDF downloads: 635
 PDF downloads: 635
	
 DOI :
	
	https://doi.org/10.32531/jvoe.v2i1.53
 DOI :
	
	https://doi.org/10.32531/jvoe.v2i1.53
	 Abstract views: 769 ,
 Abstract views: 769 ,  PDF downloads: 451
 PDF downloads: 451
	
 DOI :
	
	https://doi.org/10.32531/jvoe.v2i1.64
 DOI :
	
	https://doi.org/10.32531/jvoe.v2i1.64
	 Abstract views: 966 ,
 Abstract views: 966 ,  PDF downloads: 541
 PDF downloads: 541
	
 DOI :
	
	https://doi.org/10.32531/jvoe.v2i1.65
 DOI :
	
	https://doi.org/10.32531/jvoe.v2i1.65
	 Abstract views: 455 ,
 Abstract views: 455 ,  PDF downloads: 317
 PDF downloads: 317