BibTeX-Format:
@incollection{Klein 2009, typ = {incollection}, pages = {297-323}, title = {{S}emi-modal variation}, year = {2009}, publisher = {Mouton de Gruyter}, booktitle = {{D}escribing and {M}odeling {V}ariation in {G}rammar}, sortname = {Klein}, mylabel = {Klein 2009}, address = {Berlin}, series = {Trends in Linguistics. Studies and Monographs