BibTeX-Format:
@incollection{Klein 2009, booktitle = {{D}escribing and {M}odeling {V}ariation in {G}rammar}, sortname = {Klein}, publisher = {Mouton de Gruyter}, typ = {incollection}, address = {Berlin}, title = {{S}emi-modal variation}, series = {Trends in Linguistics. Studies and Monographs