@article{PhysRevFocus.12.15, title = {The Travels of An Exciton}, author = {Krieger, Kim}, journal = {Phys. Rev. Focus}, volume = {12}, issue = {}, pages = {15}, numpages = {1}, year = {2003}, month = {Oct}, doi = {10.1103/PhysRevFocus.12.15}, url = {http://link.aps.org/doi/10.1103/PhysRevFocus.12.15}, publisher = {American Physical Society} }