@book{Kirckhoff_2003,
	title = {Mind Mapping -- Einführung in eine kreative Arbeitsmethode},
	author = {Mogens Kirckhoff},
	year = {2003},
	biburl = {http://www.bibsonomy.org/bibtex/2710c9d311088b1b38fff848162da75cf/sosbuch},
	entrytype = {book},
	keywords = {imported }
}

@book{Kirckhoff_2003,
	title = {Mind Mapping -- Einführung in eine kreative Arbeitsmethode},
	author = {Mogens Kirckhoff},
	year = {2003},
	biburl = {http://www.bibsonomy.org/bibtex/2710c9d311088b1b38fff848162da75cf/klaasd},
	keywords = {mindmap sosbuch }
}