1. Anupindi R, Chopra S, Deshmukh SD, Van Mieghem JA, Zemel E (2006) Managing business process flows principles of operations management. Pearson Prentice Hall, Upper Saddle River
2. Ardissono L, Goy A (2000) Tailoring the interaction with users in web stores. User Model User-Adap Interact 10:251–303
3. Barclay PJ, Griffiths T, McKirdy J, Kennedy J, Cooper R, Paton NW, Gray P (2003) Teallach – a flexible user-interface development environment for object database applications. J Vis Lang Comput 14:47–77
4. Curran TA, Ladd A (2000) SAP R/3 business blueprint: understanding enterprise supply chain. Prentice Hall PTR, Upper Saddle River
5. Keystone (2007) ERP end-user business productivity: a field study of SAP & Microsoft, Keystone strategy.
http://download.microsoft.com/download/Keystone-RPBusinessProductivityStudy.pdf
. Accessed 2 May 2010