Tangwitmonai, N., P. Aungkavattana, and P. Bintachitt. “Effect of humidity on electrical property of ECA joints for dual stage micro-actuator in hard disk drives applications”. Asia-Pacific Journal of Science and Technology, vol. 19, no. 5, Apr. 2017, pp. 622-7, https://so01.tci-thaijo.org/index.php/APST/article/view/82993.