1. Vibration of simple span highway bridges;Biggs;American Society of Civil Engineers,1959
2. Concrete Bridge Design;Rowe,1962
3. Vibration Problems in Engineering;Timoshenko,1954
4. Free vibration of simple span I-beam bridges;Yamada,1958
5. On the transverse vibration of rectangular orthotropic plate;Huffington;American Society of Mechanical Engineers, Series E,1959