Reaction-diffusion systems continue to attract increasing attention from the scientific community, with investigators seeking insights into the patterns that occur in living organisms, in ecological systems, in geochemistry, and in physiochemical systems. Cross-diffusion is a special case of reaction-diffusion system and refers to the phe- nomenon in which a gradient in the concentration of one species induces a flux of another species. Pattern formation is a sub-area of complexity science, where non-linear spatial process dynamics...