6Bernd Schmalhorst. Drilling dynamics in presence of Mud flow[G]. IAI)C/SPE 59236,2000.
7Drum Heller D S. Wave in peduncles of drill strings and other periodic media[J]. The Journal of the acoustical Society of America,2002,112(6):2 527- 2 539.
8Aarestad T V, Kyllingstad A. Measurement and theoretical models on rig suspension and the effect of drill string vibrations[G]. SPE 19553.
9Svein-Helge Lea. Propagation of Coupled Pressure Waves in Borehole with Drill string[G]. SPE 37156,1996.