standards

Lippert, Ingmar, and Anonymous. "A dialogue about `diffuse requirements' on an environmental manager's task to report about technical and environmental safety." Workshop "How do you manage? Unravelling the situated practice of environmental management", 2012.

Lippert, Ingmar. "Green Business: An A-to-Z Guide: Voluntary Standards." In Green Business: An A-to-Z Guide, edited by Nevin Cohen and Dirk P. Philipsen. Sage Publications, 2010.