Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) OSHITA Hiroki and SAKO Kosuke and OHASHI Keijiro and KURATOMI Yo and TANAKA Teruhisa and INADA Tatsuo,22453 Study on reinforcement method of steel beams with openings : Part 4 Proposal of occurrence conditional expression of instability phenomenon,Summaries of technical papers of annual meeting,18839363,Architectural Institute of Japan,2014-09-12,,2014,905-906,https://cir.nii.ac.jp/crid/1570291227975422848,