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2. Use of Natural Convection Loops to Prevent Pipe Freezing;Burch,2000
3. Burch, J. and Smith, T. (1999) Unpublished study of conduction down copper piping from an ICS unit in stagnation.
4. Polybutylene Pipe Freeze/thaw Reliability Testing. SERI/MR-254-3099;Farrington,1986
5. An Investigation into Freezing and Bursting Water Pipes in Residential Construction. Research Report 96-1;Gordon,1996