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)

Simulated annealing and genetic algorithms for minimizing mean flow time in an open shop. - Michael Andresen; Heidemarie Bräsel; Marc Mörig; Jan Tusch; Frank Werner 001; Per Willenius (Math. Comput. Model., 2008)