TY  - RPRT
TI  - On the sharpness of cracks compared with Wells's COD
AU  - Roberts, E., Jr.
AU  - Srawley, J. E.
AU  - Swedlow, J. L.
PY  - 1970
UR  - https://ntrs.nasa.gov/citations/19710034695
ID  - 19710034695
ER  -