@article{article5d81e708,
title   = {Imaging the Mott insulator shells by using atomic clock shifts},
author = {Campbell, Gretchen K. and Mun, Jongchul and Boyd, Micah and Medley, Patrick and Leanhardt, Aaron E. and Marcassa, Luís Gustavo and Pritchard, David E. and Ketterle, Wolfgang},
year = {2006},
doi = {10.1126/science.1130365},
journal   = {Science}
}