Bansevicius, R., V. Jurenas, D. Mazeika, A. Zvironas, and J. A. Virbalis. 2013. “Electromagnetic Thimble for Blind: Design and Investigation”. Elektronika Ir Elektrotechnika 19 (10):66-70. https://doi.org/10.5755/j01.eee.19.10.2399.