1. Metrorail operational sound level measurements: ground-borne vibration and noise levels;Nelson;Preliminary Report for the Washington Metropolitan Area Transit Authority,1979
2. Ground-borne vibration from rail rapid transit train operations;Nelson,1978
3. Toronto's double tie trackbed system;Lawrence,1978
4. TTC Track Vibration Isolation System,1978
5. Double-sleeper track and RS-STEDEF track vibration survey at Jolimont;Nolle;Preliminary issue,1978