BibTeX-Format:
@incollection{Klein 2009, title = {{S}emi-modal variation}, year = {2009}, editor = {Andreas Dufter and Jürg Fleischer and Guido Seiler}, sortname = {Klein}, typ = {incollection}, address = {Berlin}, pages = {297-323}, booktitle = {{D}escribing and {M}odeling {V}ariation in {G}rammar}, mylabel = {Klein 2009}, series = {Trends in Linguistics. Studies and Monographs