kwˈeɪzaɪpˈɜːfɛkt ˌiːkwɪlˈɪbɹiəm ɪz ɐ ɹᵻfˈaɪnmənt ʌv nˈæʃ ˌiːkwɪlˈɪbɹiəm fɔːɹ ɛkstˈɛnsɪv fˈɔːɹm ɡˈeɪmz dˈuː tʊ ˈɛɹɪk vˈæn dˈæm.
Quasi-perfect equilibrium is a refinement of Nash Equilibrium for extensive form games due to Eric van Damme.