Jörg Lehnert. Some Remarks on Depth of Dead Ends in Groups. IJAC, 19(4):585-594, 2009. [doi]
@article{Lehnert09, title = {Some Remarks on Depth of Dead Ends in Groups}, author = {Jörg Lehnert}, year = {2009}, doi = {10.1142/S0218196709005238}, url = {http://dx.doi.org/10.1142/S0218196709005238}, researchr = {https://researchr.org/publication/Lehnert09}, cites = {0}, citedby = {0}, journal = {IJAC}, volume = {19}, number = {4}, pages = {585-594}, }