@ARTICLE{Cechak_Jaroslav_Information_2011, author={Cechak, Jaroslav}, volume={vol. 57}, number={No 3}, journal={International Journal of Electronics and Telecommunications}, howpublished={online}, year={2011}, publisher={Polish Academy of Sciences Committee of Electronics and Telecommunications}, title={Information and Navigation System for Person with Visual Impairment}, URL={http://journals.pan.pl/Content/86973/PDF/50.pdf}, doi={10.2478/v10177-011-0050-7}, }