1. Pseudorelative acceleration spectrum;Trifunac;J Eng Mech ASCE,1991
2. Biot MA Transient oscillations in elastic systems Ph.D. Thesis No.
3. Biot MA Theory of elastic systems vibrating under transient impulse with an application to earthquake-proof buildings Proceedings of the National Academy of Sciences of the United States of America
4. Theory of vibration of buildings during earthquake;Biot;ZZ Angew Math Mech,1934