HA, Y. ., C. . PARK, and S. . KANG. “A SEMANTIC WEB SERVICES-BASED INFRASTRUCTURE FOR UBIQUITOUS SERVICE SYSTEMS”. Journal of Web Engineering, vol. 8, no. 2, Oct. 2009, pp. 182-10, https://journals.riverpublishers.com/index.php/JWE/article/view/4063.