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Author: Chajda, Ivan

• Chajda, Ivan; Pondělíček, Bedřich: Algebras with tolerance extension property in 0. (English). Czechoslovak Mathematical Journal, vol. 39 (1989), issue 1, pp. 142-146
• Chajda, Ivan: On Grätzer's problem of binary 1-step congruence schemes. (English). Czechoslovak Mathematical Journal, vol. 39 (1989), issue 3, pp. 470-476
• Chajda, Ivan: Principal tolerances on lattices. (English). Czechoslovak Mathematical Journal, vol. 39 (1989), issue 1, pp. 176-180