Yuji Ichioka Tsuyoshi Yamamura Yuji Sagawa Noboru Ohnishi Noboru Sugie Evaluation of abstracts based on surface information of sentences. 104-114 2000 31 Systems and Computers in Japan 3 http://dx.doi.org/10.1002/(SICI)1520-684X(200003)31:3<104::AID-SCJ12>3.0.CO;2-X db/journals/scjapan/scjapan31.html#IchiokaYSOS00