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