Gonzalo Urcid Gerhard X. Ritter Laurentiu Iancu Single Layer Morphological Perceptron Solution to the N-Bit Parity Problem. 171-178 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3287&spage=171 2004 conf/ciarp/2004 CIARP db/conf/ciarp/ciarp2004.html#UrcidRI04