- The Coupling Effect in Biodynamic Models,
G. Birlik and Ö. Sezgin
Paper 37 from CCP: 75, ISBN 0-948749-83-0 (2002)
- Determination of Loss Factor using Resonant and Non-Resonant Methods,
G. Birlik and S. Turgay
Paper 8.4 from CCP: 55, ISBN 0-948749-57-1 (1998)