Lee, M., Cho, N., Lee, K., & Ko, K. (2011). Design and Implementation of an Intranet Security and Access Control System in Ubi-Com. Computing and Informatics, 30(3), 419–428. https://cai.type.sk/content/2011/3/design-and-implementation-of-an-intranet-security-and-access-control-system-in-ubi-com/