BibTeX-Format:
@incollection{Klein 2009, publisher = {Mouton de Gruyter}, mylabel = {Klein 2009}, title = {{S}emi-modal variation}, year = {2009}, editor = {Andreas Dufter and Jürg Fleischer and Guido Seiler}, sortname = {Klein}, booktitle = {{D}escribing and {M}odeling {V}ariation in {G}rammar}, series = {Trends in Linguistics. Studies and Monographs