M. . SASAJIMA, Y. KITANURA, T. . NAGANUMA, K. . FUJII, S. . KURAKAKE, and R. . MIZOGUCHI, “OBSTACLES REVEAL THE NEEDS OF MOBILE INTERNET SERVICES -OOPS: ONTOLOGY-BASED OBSTACLE, PREVENTION AND SOLUTION MODELING FRAMEWORK”, JWE, vol. 7, no. 2, pp. 133–157, May 2008.