.TILMedia.Internals.GasConfigurations.AnalyticDerivatives.GasObjectFunctions.specificEntropy_phxi .TILMedia.Internals.GasConfigurations.AnalyticDerivatives.GasObjectFunctions.specificEntropy_phxifunction specificEntropy_phxi = TILMedia.Internals.GasObjectFunctions.specificEntropy_phxi;