Injective Choice Functions. - Karsten Steffens (J. Comb. Theory A, 1974)

Der Satz von Dilworth und Souslin's Hypothese. - Karsten Steffens (Math. Log. Q., 1975)

On Dilworth's decomposition theorem. - Hayo Oellrich; Karsten Steffens (Discret. Math., 1976)

Injective choice functions for countable families. - Klaus-Peter Podewski; Karsten Steffens (J. Comb. Theory B, 1976)

Ergebnisse aus der Transversalentheorie. I. - Karsten Steffens (J. Comb. Theory A, 1976)

Ergebnisse aus der Transversalentheorie. II. - Karsten Steffens (J. Comb. Theory A, 1976)

On the number of automorphisms of structures. - Fred Galvin; G. Hesse; Karsten Steffens (Discret. Math., 1978)

Hall Families and the Marriage Problem. - Michael Holz; Klaus-Peter Podewski; Karsten Steffens (J. Comb. Theory A, 1979)

Maximal tight sets and the Edmonds - Gallai decomposition for matchings. - Karsten Steffens (Comb., 1985)

The f-factor Problem for Graphs and the Hereditary Property. - Frank Niedermeyer; Saharon Shelah; Karsten Steffens (Arch. Math. Log., 2006)