@ARTICLE{
author={Stoiljkovic Vojislav,Milosavljevic Pedja M,Mladenovic Srdjan T,Pavlovic Dragan Lj,Todorovic Milena N},
year={2014},
title={Improving the Efficiency of the Center for Medical Biochemistry, Clinical Center Nis, by Applying Lean Six Sigma Methodology},
journal={JOURNAL OF MEDICAL BIOCHEMISTRY},
volume={33},
number={3},
pages={299-307},
document_type={Article},
} 

@ARTICLE{
author={Stoiljkovic Vojislav,Trajkovic Jasmina,Stoiljkovic Bratislav},
year={2011},
title={Lean Six Sigma Sample Analysis Process in a Microbiology Laboratory},
journal={JOURNAL OF MEDICAL BIOCHEMISTRY},
volume={30},
number={4},
pages={346-353},
document_type={Article},
} 

@ARTICLE{
author={Stoiljkovic Vojislav,Milosavljevic Pedja M,Randjelovic Sasa SR},
year={2010},
title={Six sigma concept within banking system},
journal={AFRICAN JOURNAL OF BUSINESS MANAGEMENT},
volume={4},
number={8},
pages={1480-1493},
document_type={Article},
}