Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) MIZUTA Takanobu,Effect of Increasing of Horizontal ShareHolding by Index Funds to Competitions and Market Prices -- Investigation by Agent-Based Model --,Proceedings of the Annual Conference of JSAI,,The Japanese Society for Artificial Intelligence,2018,JSAI2018,0,2J101-2J101,https://cir.nii.ac.jp/crid/1390845712977557760,https://doi.org/10.11517/pjsai.jsai2018.0_2j101