@article{v005a006,
 author = {Ilan Newman and Yuri Rabinovich},
 title = {Hard Metrics from Cayley Graphs of Abelian Groups},
 year = {2009},
 pages = {125-134},
 doi = {10.4086/toc.2009.v005a006},
 publisher = {Theory of Computing},
 journal = {Theory of Computing},
 volume = {5},
 number = {1},
 URL = {http://www.theoryofcomputing.org/articles/v005a006},
}