- On Numerical Simulation of Cyclic Elastoplastic Deformation Processes of Shell Structures,
 J. Soric, Z. Tonkovic and W.B. Kraetzig
 Paper 6.2 from CCP: 54, ISBN 0-948749-56-3 (1998)
 
- On Stable Numerical Simulation Strategies for Elasto-Plastic Deformation Processes of Shell Structures,
 U. Montag, W.B. Kraetzig and J. Soric
 Paper 1.8 from CCP: 42, ISBN 0-948749-44-X (1996)
 
