N. Silva, R. Moreira, L. Rodrigues, and R. Marinho e Silva.
" A Low-cost IoT Architecture to support Urban Mobility for Visually Impaired People", in <em>Anais do XII Workshop de Pesquisa Experimental da Internet do Futuro</em>, Uberlândia, 2021, pp. 1-6, doi: <a href="https://doi.org/10.5753/wpeif.2021.17193">https://doi.org/10.5753/wpeif.2021.17193</a>.