For citations:
Kiselev M.G., Drozdov A.V., Kachan E.O. PENETRATION OF CONICAL INDENTER INTO FOUNDATION MATERIAL AT COMBINED PERCUSSION AND SUBSEQUENT ULTRASONIC IMPACTS. Science & Technique. 2012;(3):21-26. (In Russ.)
Kiselev M.G., Drozdov A.V., Kachan E.O. PENETRATION OF CONICAL INDENTER INTO FOUNDATION MATERIAL AT COMBINED PERCUSSION AND SUBSEQUENT ULTRASONIC IMPACTS. Science & Technique. 2012;(3):21-26. (In Russ.)