@PRESENTATION{h{\'a}jek2009,
	title     = {A fuzzy logician reading books on vagueness},
	author    = {Petr H{\'a}jek},
	year      = {2009},
	month     = {September},
	booktitle = {Logical Models of Reasoning with Vague Information 2009, Cejkovice (Czech Republic), 14-17 September},
	state     = {published}
}