@article{72boykin2007, author = "Timothy Boykin and Neerav Kharche and Gerhard Klimeck", title = "Evolution Time and Energy Uncertainty", journal = "European Journal of Physics", year = "2007", volume = "28", number = "4", note = "Eur. J. Phys. 28 (2007) 673-678 (2007); doi : 10.1088/0143-0807/28/4/007 ", url = "http://docs.lib.purdue.edu/cgi/viewcontent.cgi?article=1095&context=nanodocs", }