@ARTICLE{Gut_K._Differential_2011, author={Gut, K.}, volume={59}, number={No 4}, journal={Bulletin of the Polish Academy of Sciences Technical Sciences}, pages={395-399}, howpublished={online}, year={2011}, title={Differential interference in a polymer waveguide}, URL={http://www.journals.pan.pl/Content/83363/PDF/04_paper.pdf}, doi={10.2478/v10175-011-0047-5}, }