Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Yoda S. and Okamoto T. and Onozato N.,Inverted Conical Shell Structure Composed of 148 PCa-PC Components,Concrete Journal,0387-1061,Japan Concrete Institute,1994,32,8,33-42,https://cir.nii.ac.jp/crid/1390001205454879232,https://doi.org/10.3151/coj1975.32.8_33