Kwon, K. H., Oh, S. H., Lee, J. H. and Kim, T. H. (2010). “An analysis on determining
quality of service criteria for expressway bus passengers using the importance-Performance
analysis (IPA) - Focussing on yang-in city : Suji -.” Journal of the Korean Society
of Civil Engineers, Korean Society of Civil Engineers, Vol. 30, No. 3D, pp. 223-229
(in Korean).Kwon, K. H., Oh, S. H., Lee, J. H. and Kim, T. H. (2010). “An analysis
on determining quality of service criteria for expressway bus passengers using the
importance-Performance analysis (IPA) - Focussing on yang-in city : Suji -.” Journal
of the Korean Society of Civil Engineers, Korean Society of Civil Engineers, Vol.
30, No. 3D, pp. 223-229 (in Korean).