1. Sintered, forged and rolled iron powders;Goetzel;Iron Age,1942
2. Powder Metallurgy;Hausner,1947
3. Effect of porosity on physical properties of sintered alumina;Coble;J. Am. Ceram. Soc.,1956
4. Fundamental studies of ceramic materials;Schofield;Summary Report to O.N.R., Navy Dept. Contract No. 5-ORL-111,1949
5. The elastic constants of solid containing spherical holes;Mackenzie,1950