1. Air requirement of frost-resistant concrete;Powers;Proc. Highway Res. Board,1949
2. Durability of Concrete in Cold Climates;Pigeon,1995
3. Guide to durable concrete, ACI Manual of Concrete Practice;ACI 201.2R-01,2005
4. Chemical admixtures for concrete, ACI Manual of Concrete Practice;ACI 212.3R-01,2005
5. Air content and density of hardened concrete;Hover,2006