Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) H. Matsuda and T. Ishikawa and H. Takase,An evolutionary distribution system for Web-based teaching materials,Proceedings IEEE International Conference on Advanced Learning Technologies,,IEEE Comput. Soc,2002-11-13,,,451-452,https://cir.nii.ac.jp/crid/1874242817960008320,https://doi.org/10.1109/icalt.2001.943976