Some Ramsey numbers for complete bipartite graphs. - Martin Harborth; Ingrid Mengersen (Australas. J Comb., 1996)

On the set of solutions of the open shop problem. - Heidemarie Bräsel; Martin Harborth; Thomas Tautenhahn; Per Willenius (Ann. Oper. Res., 1999)

On the hardness of the classical job shop problem. - Heidemarie Bräsel; Martin Harborth; Thomas Tautenhahn; Per Willenius (Ann. Oper. Res., 1999)

King independence on triangle boards. - Jens-P. Bode; Heiko Harborth; Martin Harborth (Discret. Math., 2003)