Dhurandhar, A., R. Ravi, B. Graves, G. Maniachari, and M. Ettl. “Robust System for Identifying Procurement Fraud”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 29, no. 2, Jan. 2015, pp. 3896-03, doi:10.1609/aaai.v29i2.19045.