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[2] Grätzer G., Schmidt E. T.: On a problem of M. H. Stone. Acta Math. Acad. Sci. Hungar. 8 (1957), 455-460. MR 0092763

[3] Grätzer G., Schmidt E. T.: On ideal theory for lattices. Acta Sci. Math. (Szeged) 19 (1958), 82-92. MR 0095795

[4] Gгätzer G., Schmidt E. T.: Ideals and congruence relations in lattices. Acta Math. Acad. Sci. Hungar. 9 (1958), 137-175. MR 0100560

[5] Grätzer G., Schmidt E. T.: On the generalized Boolean algebra generated by a distributive lattice. Indag. Math. 20 (1958), 547-553. MR 0100561

[6] Kaтpиняк T.: Пpuмeчaнue к cmpyкmypaм Cmoyнa I. Mat.-fyz. časop. 16 (1966), 128-142. MR 0200215