Self-organizing documentary maps for information retrieval. - Qing Ma; Kousuke Enomoto; Masaki Murata (IJCNN, 2004)

Information Retrieval Capable of Visualization and High Precision. - Qing Ma; Kousuke Enomoto; Masaki Murata; Hitoshi Isahara (IJCNLP (companion), 2005)

Single Language Information Retrieval at NTCIR-5. - Qing Ma; Koichi Nakao; Kousuke Enomoto; Masaki Murata (NTCIR, 2005)