@article{NeumuellerLaschKellner2016, author = {Claudia Neum{\"u}ller and Rainer Lasch and Florian Kellner}, title = {Integrating sustainability into strategic supplier portfolio selection}, journal = {Management Decision}, volume = {54}, number = {1}, pages = {194 -- 221}, doi = {10.1108/MD-05-2015-0191}, year = {2016}, }