Polugayevsky, Lyev. The Sicilian labyrinth / Lyev Polugayevsky and translated by Ken Neat. - 1st. English ed. - Oxford : Pergamon Chess, c1991. - 2 v. : ill. ; 25 cm. - (Pergamon Russian chess series) . Includes index. Pb. ISBN: 008377963 Subjects--Topical Terms: Chess -- Openings.