@conference {jayaweera2006three,
	title = {Three Tier Approach for Hierarchical Business State Engineering},
	booktitle = {Industrial and Information Systems, First International Conference on},
	year = {2006},
	pages = {566{\textendash}570},
	publisher = {IEEE},
	organization = {IEEE},
	author = {Jayaweera, Prasad M and Jayasinghe, Jeewanie}
}
