1. Hiles, A., “The Complete IT Guide to Service Level Agreements—Matching Service Quality to Business Needs”, Rothstein Associates Inc., Brookfield, Connecticut, USA, 1999/2000 Edition.
2. Verma, D., “Supporting Service Level Agreements on IP Networks”, McMillan Technology Series, 1999.
3. Sturm, R., Morris, W. and Jander, M., “Foundations of Service Level Management”, SAMS, 2000.
4. ASPIC Best Practices Committee, “A White Paper on Service Level Agreement”, Application Service Provider Industry Consortium, November 2000.
5. Frey, N., Matlus, R. and Maurer, W., “A Guide to Successful SLA Development and Management”, Gartner Group Research, Strategic Analysis Report, October 16, 2000.