COMMEE, C. . Microcontroller Measuring Blow Count and Depth of Piles. Rajamangala University of Technology Tawan-ok Research Journal, Chonburi, Thailand, v. 13, n. 2, p. 42–49, 2020. Disponível em: https://li01.tci-thaijo.org/index.php/researchjournal2rmutto/article/view/248417. Acesso em: 9 may. 2024.