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Molokken, K. Jorgensen, M. A review of software surveys on software effort estimation. 2003 International Symposium on Empirical Software Engineering, 2003. ISESE 2003. Proceedings. 2003: 223–230. ISBN 978-0-7695-2002-5. S2CID 15471986. doi:10.1109/ISESE.2003.1237981.
Shepperd, M. Cartwright, M. Kadoda, G. On Building Prediction Systems for Software Engineers. Empirical Software Engineering. 2000, 5 (3): 175–182. S2CID 1293988. doi:10.1023/A:1026582314146.