A new pivoting rule for solving various degeneracy problems. - Tomas Gal; Ferdinand Geue (Oper. Res. Lett., 1992)

An improved N-tree algorithm for the enumeration of all neighbors of a degenerate vertex. - Ferdinand Geue (Ann. Oper. Res., 1993)

Eckenabsuchende Verfahren unter Entartung: Theorie, Algorithmen und Vergleichstests. - Ferdinand Geue (Kovač, 1994)