Defining natural-kind words

@InProceedings{ELX94-011,
	   author = {Tadeusz Piotrowski},
	   title = {Defining natural-kind words},
	   pages = {55-62},
	   booktitle = {Proceedings of the 2nd EURALEX International Congress},
	   year = {1986},
	   month = {sep},
	   date = {9-14},
	   address = {Zürich, Switzerland},
	   editor = {Mary Snell-Hornby},
	   publisher = {A. Francke Verlag},
	   isbn = {3-7720-1780-0},
	}