@article {schaden09,
	title = {Present Perfects Compete},
	journal = {Linguistics and Philosophy},
	volume = {32},
	year = {2009},
	pages = {115{\textendash}141},
	keywords = {ACL},
	doi = {10.1007/s10988-009-9056-3},
	author = {Gerhard Schaden}
}
@article {schaden:tovena:sudv,
	title = {Sharpening the Adequacy of a Characterisation},
	journal = {Sprache und Datenverarbeitung},
	year = {2009},
	author = {Gerhard Schaden and Lucia M. Tovena}
}
@article {909,
	title = {Sharpening the adequacy of a characterisation},
	journal = {Sprache und Datenverarbeitung},
	volume = {33},
	year = {2008},
	pages = {122{\textendash}137},
	author = {Gerhard Schaden and Lucia M. Tovena}
}
