- Analysing Build-Operate-Transfer Models in Utility Projects,
N. Shahrara, T. Çelik and A.H. Gandomi
Paper 2.16 from CCP: 109, ISBN 978-1-905088-64-5 (2015)
- Nonlinear Analysis of Space Trusses by the Theorem of Structural Variation,
M.P. Saka and T. Celik
Paper 20.2 from CCP: 2/3, ISBN 0-948749-00-8 (1985)