Planning with tokens: an approach between satisfaction and optimisation.

Patrick Fabiani Yannick Meiller Planning with tokens: an approach between satisfaction and optimisation. 2000 conf/puk/2000 PuK http://www-is.informatik.uni-oldenburg.de/~sauer/puk2000/papers/fabiani.pdf db/conf/puk/puk2000.html#FabianiM00