Andriyan Bayu Suksmono Akira Hirose Ultra-wideband Beamforming by Using a Complex-Valued Spatio-temporal Neural Network. 104-109 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3316&spage=104 2004 conf/iconip/2004 ICONIP db/conf/iconip/iconip2004.html#SuksmonoH04