1. Consideration of secondary effect in frame design;Cheong-Siat-Moy;J. Struct. Engng, ASCE,1972
2. Simplified second order frame analysis;Nixon;Can. J. Civ. Engng,1975
3. A practical method of second order analysis, part I.;Le Messurier;Engng J., ASCE,1976
4. A practical method of second order analysis, part II.;LeMessurier;Engng J., ASCE,1977
5. Frame research and design procedures;LeWu,1983