Pantasri, S., D. Tavichai, R. Nimsung, and T. Tositarat. “Detection of methomyl using cholinesterase in lyophilized serum: comparison of the sensitivity of human and bovine serum”. Journal of Associated Medical Sciences, vol. 40, no. 3, Feb. 2015, p. 222, https://he01.tci-thaijo.org/index.php/bulletinAMS/article/view/60138.