Ph.D. in Ingegneria Informatica E Dei Sistemi , 25th cycle (2010-2012) Ph.D. obtained in 2014 Dissertation: RELIABILITY IN OPEN SOURCE SOFTWARE Publications Works published during the Ph.D. View all publications in Porto@Iris Ullah, Najeeb (2014)Reliability in open source software. relatore: Maurizio Morisio, 26. XXVI, P.: 75 Doctoral Thesis Ullah, Najeeb; Morisio, Maurizio; Vetro', Antonio (2013)A Comparative Analysis of Software Reliability Growth Models using defects data of Closed and Open Source Software. In: 35TH ANNUAL IEEE SOFTWARE ENGINEERING WORKSHOP, HERACLION, CRETE, GREECE, 12-13 OCTOBER 2012, pp. 187-192. ISBN: 9781467355742 Contributo in Atti di Convegno (Proceeding) Ullah, Najeeb; Morisio, Maurizio (2013)An Empirical analysis of Open Source Software Defects data through Software Reliability Growth Models. In: IEEE Eurocon 2013 conference, Zagreb, Croatia, 1-4 July 2013, pp. 460-466 Contributo in Atti di Convegno (Proceeding)