TY  - BOOK
AU  - Evans,J.R.
AU  - Stevens,R.
TI  - The 'C' ring test for the strength of brittle materials
UR  - https://drive.google.com/file/d/1ONE3KQ2qMEq2TTNuQoCTRJrFN1Bed2Wh/view?usp=drivesdk
ER  -