Addendum to 'A simple differential equation system for the description of competition among religions'
T. Wieder. International Mathematical Forum7 (54):
2681-2686(September 2012)
We propose a linear differential equation system for the description
of competitions among populations (e.g. religions) for followers. The
interaction among the populations is modeled by the use of constant
coefficients and, as the new feature, by additional damping factors.