Distributed Planning in Product Recovery Networks. - Eberhard Schmid; Grit Walther; Thomas Spengler (OR, 2005)

Planning and Evaluation of Sustainable Reverse Logistics Systems. - Grit Walther; Eberhard Schmid; Sanne Kramer; Thomas Spengler (OR, 2005)

Coordination in Recycling Networks. - Eberhard Schmid; Grit Walther; Thomas Spengler (OR, 2007)