Integrating symbolic knowledge in reinforcement learning
@InProceedings{hailu98smc,
  author = 	 {G. Hailu and G. Sommer},
  title = 	 {Integrating symbolic knowledge in reinforcement learning},
  booktitle = 	 {SMC┼Ż98 Conference Proceedings},
  organization = {1998 IEEE Int. Conf. on Systems, Man and Cybernetics},
  year =	 1998,
  address =	 {San Diego, California},
  pages =        {1491-1495},
  }