5Lubinski A,etc.. Helical buckling of tubing sealed in packers[M]. JPT, 1962,655-670.
6Lubinski A,etc.. Buckling of tubing in pumping wells,its effects and means for controlling it ,Transactions of ASME[S]. 1975: 210-225.
7Cheatham J B,etc.. Helical postbuckling configuration of a weightless column under the action of an axial load, Society of Petroleum Engineers Journal [M].1984:467-472.
8Mitchell R F. New concepts for helical buckling[C].SPEDE, 1988:303-310.