1. The bending vibration of circular ring;Hoppe;Crelle Journal of Mathematics,1871
2. Dynamic analysis of rings by finite-differences;Ball;Journal of Engineering Mechanics Division, American Society of Civil Engineers,1967
3. Vibration of thin circular rings;Lang;Jet Propulsion Laboratory Technical Report No. 32-261,1962
4. Inplane flexural vibration of circular rings;Rao;Journal of Applied Mechanics, Design Data and Methods,1969