@ARTICLE{
author={Nikolic Nenad D,Medarevic Djordje P,Ibric Svetlana R,Djuric Zorica R},
year={2015},
title={Evaluation of formulation and effects of process parameters on drug release and mechanical properties of tramadol hydrochloride sustained release matrix tablets},
journal={HEMIJSKA INDUSTRIJA},
volume={69},
number={5},
pages={503-510},
document_type={Article},
} 

@ARTICLE{
author={Nikolic Nenad D,Medarevic Djordje P,Djuris Jelena D,Vasiljevic Dragana D},
year={2015},
title={Comparison of Drug Release and Mechanical Properties of Tramadol Hydrochloride Matrix Tablets Prepared with Selected Hydrophilic Polymers},
journal={CHEMICAL INDUSTRY & CHEMICAL ENGINEERING QUARTERLY},
volume={21},
number={3},
pages={369-378},
document_type={Article},
} 

@ARTICLE{
author={Nikolic Nenad D,Ibric Svetlana R,Medarevic Djordje P,Djuric Zorica R},
year={2014},
title={Establishing Design Space for Tramadol HCl Release from Hydrophilic Matrix Tablets},
journal={LATIN AMERICAN JOURNAL OF PHARMACY},
volume={33},
number={7},
pages={1131-1138},
document_type={Article},
}