Optimal planning in large multi-site production networks. - Christian Timpe; Josef Kallrath (Eur. J. Oper. Res., 2000)

Solving planning and scheduling problems with combined integer and constraint programming. - Christian Timpe (OR Spectr., 2002)

A Hybrid MIP-CP Algorithm for a Linked Planning and Scheduling Problem from Chemical Industry. - Christian Timpe (Tech. Sci. Informatiques, 2003)