1. Shaft whipping;Newkirk;Gen. Electr. Rev.,1924
2. Shaft whipping due to oil action in journal bearings;Newkirk;Gen. Electr. Rev.,1925
3. The influence of oil-film journal bearings on the stability of rotating machines;Hagg;J. Appl. Mech.,1946
4. Contribution to theory of oil whip;Poritsky;Trans. ASME,1953
5. Oil-flim whirl — an investigation of disturbances due to oil films in journal bearings;Newkirk;Trans. ASME,1956