"定慶一郎,五十嵐規矩夫,三井和也","2軸圧縮応力およびせん断応力を受ける平行四辺形パネルの座屈耐力","2025年度日本建築学会大会学術講演会","日本建築学会大会学術講演梗概集",,"Vol. C-?",,,2025,July
"定慶一郎,五十嵐規矩夫,三井 和也","平行四辺形柱梁L形接合部パネルの繰返し挙動","鋼構造シンポジウム2024 第32回鋼構造年次論文（報告）発表会","鋼構造年次論文報告集",,"Vol. 32",,"pp. 309-317",2024,Nov.
"定 慶一郎,五十嵐 規矩夫,三井 和也","平行四辺形柱梁L 形接合部パネルの応力分布と繰返し挙動","日本建築学会大会（関東）","日本建築学会大会学術講演梗概集","日本建築学会","Vol. C-?",,"pp. 957-958",2024,July
"Kazuya Mitsui,Kikuo Ikarashi,Keiichiro Sada","Elastic Critical Buckling Coefficients for Skew Plates of Steel Structures under Biaxial Normal Stress",,"Buildings","MDPI","Vol. 14","Issue 4","  901",2024,Mar.
"定 慶一郎,三井 和也,五十嵐 規矩夫","2方向圧縮力を受ける平行四辺形パネルウェブの弾性座屈耐力",,"鋼構造年次論文報告集","一般社団法人 日本鋼構造協会","Vol. 31",,"pp. 609-615",2023,Nov.
"定 慶一郎,松本 樹,三井 和也,五十嵐 規矩夫","箱形断面部材の座屈を伴う変形挙動の解析精度に及ぼす材料構成則とその定数による影響","日本建築学会大会（近畿）","日本建築学会大会学術講演梗概集","日本建築学会","Vol. C-?","No. 22423","pp. 845-846",2023,July