Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
We clarify the definition and interpretation of "sustainability economics" (Baumgärtner and Quaas, 2010) in response to recent comments by van den Bergh (2010), Bartelmus (2010) and others. For that sake, we distinguish between general and specific definitions of sustainability and sustainability economics, as well as between conceptual and practical approaches.