@inbook {2786,
	title = {Invariance and linguistic variation: a case grammar characterisation},
	booktitle = {11. Fremdsprachendidaktiker-Kongre{\ss}},
	year = {1987},
	month = {1987},
	pages = {604-610},
	publisher = {Narr},
	organization = {Narr},
	address = {T{\"u}bingen},
	keywords = {NG},
	author = {Anderson, John M.},
	editor = {Melenk, Hartmut and Firges, Jean and Nold, G{\"u}nter and Strauch, Reinhard and Zeh, Dieter}
}
