@article{Physics.2.100, title = {Nodes to the grindstone}, author = {Hirschfeld, Peter J.}, journal = {Physics}, volume = {2}, issue = {}, pages = {100}, numpages = {1}, year = {2009}, month = {Nov}, doi = {10.1103/Physics.2.100}, url = {http://link.aps.org/doi/10.1103/Physics.2.100}, publisher = {American Physical Society} }