1. Vibration problems in engineering;Timoshenko,1974
2. Structural dynamics by finite elements;Weaver,1987
3. Natural frequencies of thin-walled bars of open cross-section;Roberts;J Struct Engng,1987
4. Vibrational analysis of thin-walled bars with open cross-sections;Wekezer;J Struct Engng,1989
5. Free vibration of thin-walled bars with open cross-sections;Wekezer;J Struct Engng,1987