1. A study into the use of pseudo random binary sequence pressure disturbances to measure sonic velocity in a two-phase flow system;Gill,1972
2. Measurement by correlation of small amplitude pressure wave propagation velocity in a gas-solids flow;Reed,1973
3. Random signal testing for evaluating system dynamics, (August);Davies;Wireless World,1966
4. Reflection of pressure waves at sharp-edged orifices, (February);Earles;The Engineer,1965