@ARTICLE{
author={Pryamikov Andrey,Hadzievski Ljupco R,Fedoruk Mikhail,Turitsyn Sergei,Aceves Alejandro},
year={2021},
title={Optical vortices in waveguides with discrete and continuous rotational symmetry},
journal={JOURNAL OF THE EUROPEAN OPTICAL SOCIETY-RAPID PUBLICATIONS},
volume={17},
number={1},
pages={-},
document_type={Review},
} 

@ARTICLE{
author={Belicev Petra P,Gligoric Goran M,Maluckov Aleksandra A,Hadzievski Ljupco R,Turitsyn Sergei},
year={2021},
title={Topological Charge Switch in Active Multi-Core Fibers},
journal={ANNALEN DER PHYSIK},
volume={533},
number={9},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Hadzievski Ljupco R,Maluckov Aleksandra A,Rubenchik Alexander M,Turitsyn Sergei},
year={2015},
title={Stable optical vortices in nonlinear multicore fibers},
journal={LIGHT-SCIENCE & APPLICATIONS},
volume={4},
number={},
pages={-},
document_type={Article},
}