Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Olaf Witkowski and Takashi Ikegami,How to Make Swarms Open-Ended? Evolving Collective Intelligence Through a Constricted Exploration of Adjacent Possibles,Artificial Life,1064-5462,MIT Press,2019-05,25,2,178-197,https://cir.nii.ac.jp/crid/1360286996445688832,https://doi.org/10.1162/artl_a_00288