Sangkrajang K, Tangwannawit P. MESSENGER’S CHATBOT BASED ON ARTIFICIAL INTELLIGENCE FOR DIGITAL LIBRARY SERVICE. Life Sci. Environ. J. [internet]. 2020 Sep. 14 [cited 2026 Sep. 21];21(2):468-80. available from: https://ph01.tci-thaijo.org/index.php/psru/article/view/242317