Nihon Jōhō Shisutemu Yūzā Kyōkai

• "Kigyō jōhōka jittai chōsa 1998-nendoban" hōkoku
• IT keiei fukyū sokushin ni muketa chōsa kenkyū hōkokusho
• IT tōshi kachi hyōka ni kansuru chōsa kenkyū