Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Sugiyama Keiji,2067) Experimental Study of Steel Purlin(Structure),Transactions of the Architectural Institute of Japan,03871185,Architectural Institute of Japan,1959,63.1,0,501-504,https://cir.nii.ac.jp/crid/1390001205570100864,https://doi.org/10.3130/aijsaxx.63.1.0_501