“…Binary algebras with the hyperidentity of associativity (7) under the name of Γ-semigroups (or gamma-semigroups), doppelsemigroups and doppelalgebras also were considered by various authors [14,130,217,259,261,262,225,243,308,310,6,129,35,36,66,79,80,81,82,83,311] (see earlier papers [250,45]…”