@conference{czyzewski1991zebra, title = {Zebra Crossing Signalization System for Visually Impaired People Based on the Space Localization Phenomena}, author = {Czyzewski, Andrzej and Budzynski, Gustaw K. and Kostek, Bozena}, booktitle = {Audio Engineering Society Convention 91}, month = {Oct}, year = {1991}, url = {https://www.aes.org/e-lib/browse.cfm?elib=5503} }