Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
In a game of imperfect recall, a sequential equilibrium may not be a Nash equilibrium, and a perfect equilibrium may not be a sequential equilibrium. Sufficiency conditions weaker than perfect recall are given to ensure the standard relationships hold between perfect equilibrium, sequential equilibrium and Nash equilibrium. Copyright Springer-Verlag Berlin/Heidelberg 2005