CHRISTOPOULOU1, E. ., J. . GAROFALAKIS, C. . MAKRIS1, Y. . PANAGIS, A. PSARAS-CHATZIGEORGIOU, E. . SAKKOPOULOS, and A. A. TSAKALIDIS. “TECHNIQUES AND METRICS FOR IMPROVING WEBSITE STRUCTUREa”. Journal of Web Engineering, vol. 2, no. 1-2, June 2003, pp. 090-04, https://journals.riverpublishers.com/index.php/JWE/article/view/4381.