Czédli, Gábor. “Accumulation Points of Congruence Densities of Finite Lattices: Dedicated to George Grätzer on the Occasion of His Ninetieth Birthday, With Appreciation and Admiration, and in Friendship”. CUBO, A Mathematical Journal, vol. 28, no. 3, Sept. 2026, pp. 455-78, doi:10.56754/0719-0646.2803.455.