@techreport{Wilkes1992b, type = "{\it}", author = "David Wilkes and Gregory Dudek and Michael Jenkin and Evangelos Milios", year = "1992", publisher = "McGill Centre for Intelligent Machines", institution = "McGill Centre for Intelligent Machines", number = "McGill CIM TR-92-9", title = "Reflections on Sonar Range Sensing", refnumber = "3 report" }