Andrews AL. A consideration of P-delta effects in ductile reinforced concrete frames: T. Paulay BNZNSEE vol. 11, no. 3, 1978. BNZSEE [Internet]. 1979 Dec. 31 [cited 2026 Oct. 27];12(4):357-61. Available from: https://bulletin.nzsee.org.nz/article/view/1044