@INPROCEEDINGS{bruhn2004hierarchical,
  author = {Jens Bruhn and Sven Kaffille and Guido Wirtz},
  title = {Hierarchical Scheduling for State-Based Services},
  booktitle = {The 2004 International Conference on Parallel and
Distributed Processing
	
		Techniques and Applications},
  year = {2004},
  editor = {Hamid R. Arabnia},
  pages = {179-185},
publisher = {CSREA Press},

  abstract = {Service descriptions based on type hierachies and abstract
service
	states ruling the availability of operations permit more secure
	service combinations in distributed systems design than traditional
	signatures. The advantages of these additional information about
	services can also be utilized to make service  scheduling more robust
	and efficient. A framework for scheduling such services is introduced
	and the central techniques used to provide a portable Java-based
	scheduling framework are discussed.},
}