Andrzej Szepietowski. A Finite 5-Pebble-Automaton Can Search Every Maze. Inf. Process. Lett., 15(5):199-204, 1982.
@article{Szepietowski82, title = {A Finite 5-Pebble-Automaton Can Search Every Maze}, author = {Andrzej Szepietowski}, year = {1982}, tags = {search}, researchr = {https://researchr.org/publication/Szepietowski82}, cites = {0}, citedby = {0}, journal = {Inf. Process. Lett.}, volume = {15}, number = {5}, pages = {199-204}, }