Wyniki
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On the natural order relation in Peano algebras with finitary or infinitary operations
Karl-Heinz Diener
Bulletin of the Section of Logic , 22 /3 (1993) s. 127-134 -
On models with automorphisms
Heinz-Dieter Ebbinghaus
Bulletin of the Section of Logic , 20 /3-4 (1991) s. 96 -
Quantification over lines
Heinz-Peter Tuschnik
Bulletin of the Section of Logic , 20 /3-4 (1991) s. 116