- Ascher, U M, Mattheij, R M M, and Russell, R D, Numerical Solution of Boundary Value Problems for Ordinary Differential Equations. SIAM, 1995.
- Dolan, E D, and More, J J, Benchmarking Optimization Software with COPS. Tech. rep., Mathematics and Computer Science Division, 2000.
- Original source: GAMS Model of fixed flowchan.gms from GAMS 24.4 Model Library (rhs of one equation changed from 0 to 1)