Kim, K.-J., W.-S. Shin, D.-K. Min, H.-J. Kim, J.-S. Yoo, H.-M. Lim, S. H. Lee, and Y.-K. Jeong. “Service Quality Model for IPTV Service: Identification of Key Features and Their Relationships”. International Journal of Industrial Engineering: Theory, Applications and Practice, vol. 16, no. 4, Aug. 2009, doi:10.23055/ijietap.2009.16.4.81.