@ARTICLE{
author={Movrin Dejan,Milutinovic Mladomir,Vilotic Marko D,Alexandrov Sergei,Lang Lihui},
year={2021},
title={A Method for Determining the Workability Diagram by Varying Friction Conditions in the Upsetting of a Cylinder between Flat Dies},
journal={CRYSTALS},
volume={11},
number={11},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Vilotic Marko D,Sidjanin Leposava P,Alexandrov Sergei,Lang Lihui},
year={2020},
title={Effect of Rotation of the Principal Stress Axes Relative to the Material on the Evolution of Material Properties in Severe Plastic Deformation Processes},
journal={MATERIALS},
volume={13},
number={20},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Alexandrov Sergei,Sidjanin Leposava P,Vilotic Dragisa,Movrin Dejan,Lang Lihui},
year={2018},
title={Generation of a Layer of Severe Plastic Deformation near Friction Surfaces in Upsetting of Steel Specimens},
journal={METALS},
volume={8},
number={1},
pages={-},
document_type={Article},
}