1. An Electrical Crevasse Detector;Cook;Geophysics,1956
2. Silas B. Bowling and Owen M. Perry, Personal Communications;
3. Electronics to Blaze Antarctic Trail;Bowling;Electronic Week,1956
4. Joseph J. Wormser, Personal Communication;
5. System Test Report for Engineering Test Model 1 Crevasse Detector;Wormser;Contract DA-44-009-ENG2803,1956