1. Energy consumed by rock drill noise;Holdo,1958
2. A theoretical and experimental study of the percussive drilling of rock;Hustrulid;Int. J. Rock Mech. Min. Sci.,1971
3. A theoretical and experimental study of percussive drilling of rock;Hustrulid;Int. J. Rock Mech. Min. Sci.,1972
4. The percussive process in piston and drill steel in percussive drilling;Arndt;Gluckourf, Sehr Gang,1960
5. Strain wave behavior in percussive drill steels during drilling operations;Hawkes;Mine Quarry Engng.,1961