1. Davis, W.R. Measurement of Mechanical Strength of Refractory Materials by a Non-Destructive Method, Research Paper No 395, Brit. Ceram. Res. Assn., Stoke-On-Trent, England, 1955.
2. Nondestructive ultrasonic evaluation of refractories;Semler;Interceram,1981
3. Prediction of refractory strength using non destructive sonic measurements;Aly;Am. Ceram. Soc. Bull.,1985
4. Sonic velocity quality control of steel plant refractories;Russell;Am. Ceram. Soc. Bull.,1984
5. Relationship between mechanical characteristics and thermal shock behaviour of alumina-based refractories;Volkov-Husovic;Interceram,2003