Jan-Eike Michels Krishna G. Kulkarni Christopher M. Farrar Andrew Eisenberg Nelson Mendonça Mattos Hugh Darwen 30-38 2003 45 it - Information Technology 1 ftp://ftp.oldenbourg.de/pub/download/frei/it/it0301_030.pdf db/journals/it/it45.html#MichelsKFEMD03