People ・Martel R R ・Article

Housner, G. W.; Martel, R. R.; et el. (1953) Spectrum analysis of strong-motion earthquakes; Bulletin of the Seismological Society of America; Vol. 43; No. 2; 97-119
Martel, R. R. (1929) The effects of earthquakes on buildings with a flexible first story; Bulletin of the Seismological Society of America; Vol. 19; No. 3; 167-178