LED traffic signal light which considered people of a low vision
M. Kaburaki, Y. Nakashima, M. Takamatsu, K. Mima, S. Nakajima
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M. Kaburaki, Y. Nakashima, M. Takamatsu, K. Mima, S. Nakajima (2005). LED traffic signal light which considered people of a low vision. Gerontechnology, 3(4), 225-225
https://doi.org/10.4017/gt.2005.03.04.081.00