SASAJIMA, MUNEHIKO, YOSHINOBU KITANURA, TAKEFUMI NAGANUMA, KUNIHIRO FUJII, SHOJI KURAKAKE, and RIICHIRO MIZOGUCHI. 2008. “OBSTACLES REVEAL THE NEEDS OF MOBILE INTERNET SERVICES -OOPS: ONTOLOGY-BASED OBSTACLE, PREVENTION AND SOLUTION MODELING FRAMEWORK”. Journal of Web Engineering 7 (2):133-57. https://journals.riverpublishers.com/index.php/JWE/article/view/4093.