Tristan O. R. Allwood, Susan Eisenbach. Strengthening the Zipper. Electronic Notes in Theoretical Computer Science, 253(7):3-18, 2010. [doi]
@article{AllwoodE10, title = {Strengthening the Zipper}, author = {Tristan O. R. Allwood and Susan Eisenbach}, year = {2010}, doi = {10.1016/j.entcs.2010.08.028}, url = {http://dx.doi.org/10.1016/j.entcs.2010.08.028}, researchr = {https://researchr.org/publication/AllwoodE10}, cites = {0}, citedby = {0}, journal = {Electronic Notes in Theoretical Computer Science}, volume = {253}, number = {7}, pages = {3-18}, }