Please find attached the announcement of a PhD position as well as a postdoctoral position available in Belgium -- Daniela De Canditiis, PhD Istituto per le Applicazioni del Calcolo "M.Picone" (CNR) via dei Taurini, 19 -- 00185 Roma, Italy tel: +39 06 49937342 fax: +39 06 4404306 http://www.iac.rm.cnr.it/~danielad/