1. Analysis of helical beams under symmetrical loading;Holmes;ASCE,1957
2. International forces in uniformly loaded helicoidal girders;Scordelis;ACI Jnl,1960
3. Carry-over (transfer) matrix method for the static analysis of helical bars (in Turkish);Cinemre;Ph.D. thesis in the Civil Engineering Department of the Technical University of İstanbul,1960
4. Continuous helicoidal girders;Abdul-Baki;ASCE,1973
5. Using stiffness matrix method the static analysis of the helical bars (in Turkish);Haktanir,1989