1. Analytical and experimental methods in engineering seismology;Biot;ASCE Transactions,1942
2. 23rd ISET annual lecture: 70-th anniversary of Biot spectrum;Trifunac;ISET J Earthq Technol,2003
3. Biot response spectrum;Trifunac;Soil Dynam Earthq Eng,2006
4. Elastic response spectrum: a historical note;Chopra;Earthq Eng Struct Dynam,2007
5. Early history of the response spectrum method;Trifunac;Soil Dynam Earthq Eng,2008