(1975)International Conference on Developments in power System Protection (1989)International conference on devlopemnts in power system protection International conference on Developments in power system protection International conference on devlopemnts in power system protection International Conference on Developments in power System Protection (Cardiff)International Conference on Developments in Bridge Design and Construction International Conference on Developments in Bridge Design and Construction (1976)International Conference on Millimetric Waveguide Systems (1982)International conference on pattern recognition International Conference on New Developments in Automatic Testing