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• Volume 45

Author: Zhang, Yue Hui

• Zhang, Yue Hui: On the Jakubík Problem on radical classes of lattice ordered groups. (English). Czechoslovak Mathematical Journal, vol. 45 (1995), issue 2, pp. 347-349
• Zhang, Yue Hui: Unique covering on radical classes of $\ell$-groups. (English). Czechoslovak Mathematical Journal, vol. 45 (1995), issue 3, pp. 435-441