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