Error:URL rejected: Malformed input to a URL function Correspondingauthor.tel.: 61 3 545 8044;fax: 61 3 E Mailaddress:mohan.krishnamoorthy@csiro.aukrishnamoorthy).0377 2217/seefrontmatter2003elsevierb.v.allrightsreserved.doi:10.1016/s0377 2217(03)00095 - PowerPoint Presentations and PDF Documents