@ARTICLE{Dorosz_J._Novel_2014, author={Dorosz, J.}, volume={62}, number={No 4}, journal={Bulletin of the Polish Academy of Sciences Technical Sciences}, pages={619-626}, howpublished={online}, year={2014}, title={Novel constructions of optical fibers doped with rare – earth ions}, URL={http://journals.pan.pl/Content/83984/PDF/02_paper.pdf}, doi={10.2478/bpasts-2014-0067}, }