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[2] Kutinová В., Sturm T.: Algebraic closures of compact elements. Czech. Math. J. 29 (1979), 359-365. MR 0536063

[3] Sturm T., al.: Congruence lattices in a category of models. (To appear.)

[4] Sturm T.: Verbände von Kernen isotoner Abbildungen. Czech. Math. J. 22 (1972), 126-144. MR 0307919 | Zbl 0346.06002

[5] Sturm T.: Einige Charakterisationen von Ketten. Czech. Math. J. 23 (1973), 375-391. MR 0329985 | Zbl 0346.06005

[6] Sturm T.: On the lattice of kernels of isotonic mappings II. Czech. Math. J. 27 (1977), 258-295. MR 0498298 | Zbl 0437.06005

[7] Ryšlinková J.: On m-algebraic closures of n-compact elements. Comment. Math. Univ. Carolinae, 19, 4 (1978), 743-754. MR 0518185

[8] Ryšlinková J.: The characterization of m-compact elements in some lattices. Czech. Math. J. 29 (1979), 252-267. MR 0529513

[9] Sturm T.: On m-compact elements in some lattices of equivalences. (To appear.).