title = {Investigation of The Laws of Thought On Which Are Founded the
Mathematical Theories of Logic and Probabilities},
author = {George Boole}, note = {Also available from Dover, New York 1958, ISBN 0-486-60028-9.}, url = {http://www.gutenberg.org/etext/15114}, year = {1853},
keywords = {Boole boole laws logic logik thought }
::