@article{Kaelbling89,
        Author = {Leslie Pack Kaelbling},
        Journal = {Robotics and Autonomous Systems},
        Note = {Also published in {\it Toward Learning Robots}, W. Van de Velde, Ed., MIT Press, 1991},
        Number = {2},
        Title = {Foundations of Learning in Autonomous Agents},
        Volume = {6},
        Year = {1991}}