Chen Y, L Liang, F Yang and J Zhu (2006). “Evaluation of Information Technology Investment: A Data Envelopment Analysis Approach.” Computer and Operations Research 33(5): 1368-1379.
Chen Y, L Liang, F Yang and J Zhu (2006). “Evaluation of Information Technology Investment: A Data Envelopment Analysis Approach.” Computer and Operations Research 33(5): 1368-1379.