@UNPUBLISHED{Schmidt94e,
AUTHOR = {Schmidt, R. A.},
YEAR = {Sept.\ 1993/Aug.\ 1994},
TITLE = {Peirce Algebras and Relation Algebras are Equipollent},
NOTE = {Manuscript.}
URL = {http://www.cs.man.ac.uk/~schmidt/publications/equipol.dvi.gz},
}