1. Buckling Strength of Metal Structures;Bleich,1952
2. Stability Functions for Structural Frameworks;Livesley,1956
3. Theory of Elastic Stability;Timoshenko,1961
4. 9th Congrès Intern. Mécan. Appl., Univ. Bruxelles;Merchant,1957
5. Elementary Matrices and some Application to Dynamics and Differential Equations;Frazer,1938