Efficient algorithms for the clearing of interbank payments. - Michael M. Güntzer; Dieter Jungnickel; Matthias Leclerc (Eur. J. Oper. Res., 1998)

Approximate minimization algorithms for the 0/1 Knapsack and Subset-Sum Problem. - Michael M. Güntzer; Dieter Jungnickel (Oper. Res. Lett., 2000)