Ahn, W. Y. (2012). "A study on roundabout signal metering operation by considering entry lane's traffic volume." International Journal of Highway Engineering, Vol. 14, No. 2, pp. 175-181 (in Korean). 10.7855/IJHE.2012.14.2.175

Ahn, W. Y. and Lee, S. Y. (2013). "Roundabout signal metering operation methods by considering approach lane's degree of saturation." International Journal of Highway Engineering, Vol. 15, No. 5, pp. 217-226 (in Korean). 10.7855/IJHE.2013.15.5.217

Akçelik, R. (2004). Roundabouts with unbalanced flow patterns, ITE 2004 Annual Meeting.

Akçelik, R. (2005). Capacity and performance analysis of roundabout metering signals, TRB National Roundabout Conference, Vail, Colorado, USA, pp. 22-25.

Akçelik, R., Chung, E. and Besley, M. (1996). "Performance of roundabouts under heavy demand conditions." Road and Transport Research, Vol. 5, No. 2, pp. 36-50.

An, H. K. and Kim, D. S. (2021). "A review of roundabout capacity model." Journal of the Korean Society of Civil Engineers, KSCE, Vol. 41, No. 2, pp. 143-150 (in Korean).

An, H. K., Yue, W. L. and Bae, G. M. (2016). "A study of delay time analysis at metering roundabout." Legislation and Policy Studies, Vol. 8, No. 2, pp. 345-367 (in Korean).

An, H. K., Yue, W. L. and Kim, D. S. (2015). "A proposal of two signals roundabout analysis method using SIDRA6." Journal of the Korean Society of Civil Engineers, KSCE,Vol. 35, No. 5, pp. 1111-1121 (in Korean). 10.12652/Ksce.2015.35.5.1111

An, H. K., Yue, W. L. and Stazic, B. (2017). "Dual signal roundabout evaluation in Adelaide using SIDRA and AIMSUN." Road & Transport Research, Vol. 26, No. 2, pp. 36-49.

Krogscheepers, J. and Roebuck, C. (2000). Unbalanced traffic volumes at roundabouts, In: Fourth International Symposium on Highway Capacity, Transportation Research Circular E-C018, Maui, Hawaii, pp. 446-458.

Lee, D. M., You, J. H., Kim, D. H. and Lee, S. K. (2013). "An analysis of roundabout application effects based on before and after field studies." International Journal of Highway Engineering, KSRE, Vol. 15, No. 1, pp. 111-119 (in Korean). 10.7855/IJHE.2013.15.1.111

Ogden, K. W. and Taylor, S. Y. (1996). Traffic engineering and management, Institute of Transport Studies, Department of Civil Engineering, Monash University, Melbourne, Australia, Clayton, Vic.

Park, J., Lee, D. M. and Kim, Y. B. (2015). "Development of an application for signal metering on roundabouts." Proceedings of the KOR-KST Conference 73, pp. 359-364 (in Korean).