Simon Hoof published a brief note on dynamic oligopolistic competition in the Journal of Optimization Theory and Application (free access via: https://rdcu.be/b5GQW).
Abstract:
We correct the local stability analysis of the two-player case of Lambertini (J Optim Theory Appl 145(1):108–119, 2010). Due to a sign error, the steady state was mischaracterized as being stable, while it is unstable.