Wattanavichean, K. and Lohasaptawee, C. (1999) “Laser Diode Applied for Distance Measurement”, Agriculture and Natural Resources. Bangkok, Thailand, 33(3), pp. 386–396. available at: https://li01.tci-thaijo.org/index.php/anres/article/view/240458 (accessed: 17 September 2026).