@book{schroeder90algebra,
	title = {Algebra der Logik I, II, III. 1890, 1891, 1895},
	address = {Bristol},
	author = {Ernst Schröder},
	publisher = {Thoemmes Press},
	year = {2001},
	biburl = {http://www.bibsonomy.org/bibtex/2f0fa2e93dbd3f388baf627b774e3b8e3/stumme},
	location = {Bristol 2001},
	keywords = {fca logik }
}