A Basis Result for ∑ 0 3 Sets of Reals with an Application to Minimal Covers
Leo A. Harrington, Alexander S. Kechris · Proceedings of the American Mathematical Society · 1975
Leo A. Harrington, Alexander S. Kechris, A Basis Result for ∑0 3 Sets of Reals with an Application to Minimal Covers, Proceedings of the American Mathematical Society, Vol. 53, No. 2 (Dec., 1975), pp. 445-448