1. Stress Waves in Solids;Kolsky,1963
2. Wave Propagation in Elastic Solids;Achenbach,1973
3. Longitudinal wave transmission and impact;Donnell;Trans. Am. Soc. Mech. Eng.,1930
4. Hammare och borr;Dahl;Jernkontorets Annaler,1932
5. Studies on the percussive deep hole drilling of rocks;Takaoka;J. Min. Metall. Inst. Jpn.,1956