Oberschelp, W. Strukturzahlen in endlichen Relationssystemen. (German) Zbl 0216.30602 Contrib. Math. Logic, Proc. Logic Colloq., Hannover 1966, 199-213 (1968). Cited in 4 Documents MSC: 08A05 Structure theory of algebraic structures Citations:Zbl 0177.293 PDFBibTeX XML