4 found
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  1.  24
    A first order approach to correspondence and congruence systems.Manfred Armbrust - 1973 - Mathematical Logic Quarterly 19 (14‐18):215-222.
  2.  14
    Equivalence relations versus unary operations.Manfred Armbrust - 1983 - Mathematical Logic Quarterly 29 (11):569-571.
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  3.  17
    (1 other version)On Quasi‐Universal Model Classes.Manfred Armbrust & Klaus Kaiser - 1972 - Mathematical Logic Quarterly 18 (25‐30):403-406.
  4.  28
    On Set‐Theoretic Characterization of Congruence Lattices.Manfred Armbrust - 1970 - Mathematical Logic Quarterly 16 (8):417-419.