1. Continuous Frames of Reinforced Concrete;Cross,1951
2. Methoda Approximatilor Successive;Agent,1965
3. Formulas for Stress and Strain;Roark,1975
4. Obliczenia Statycze, Prelaw O Xmiennej Sztywnosk, Metoda A;Pytowsky,1951
5. Explicit stiffness matrices for non-prismatic members;Eisenberger;Comput. Struct.,1985