G. Alan Creak. Word games and search spaces. SIGART Bulletin, 103:41-44, 1988. [doi]
@article{Creak88-0, title = {Word games and search spaces}, author = {G. Alan Creak}, year = {1988}, doi = {10.1145/44418.44425}, url = {http://doi.acm.org/10.1145/44418.44425}, researchr = {https://researchr.org/publication/Creak88-0}, cites = {0}, citedby = {0}, journal = {SIGART Bulletin}, volume = {103}, pages = {41-44}, }