Analysis of the steady state values for S7P and F6P in dependence of ATP concentration. This analysis is based on the comparison of original  and corrected Zhu model. Furthermore, an impact of particular problems is analyzed as well. The modifications in kinetic parameters and the rate equations are described by different colors. Black: original Zhu model, Appendix A version; red: original Zhu model, Matlab version ; gray: modified Appendix A version  (kM103 = 0.015 mmol·l-1); violet: modified Matlab version (kM103 = 0.015 mmol·l-1); blue: modified Matlab version (kM103 = 0.015 mmol·l-1, kE7 = 0,076) and green: modified Appendix A version (kM103 = 0.06 mmol·l-1, kE7 = 0,076). The initial concentrations and conditions were the same for all simulations.