@article{Physics.3.61, title = {Backward lasing yields a perfect absorber}, author = {Longhi, Stefano}, journal = {Physics}, volume = {3}, issue = {}, pages = {61}, numpages = {1}, year = {2010}, month = {Jul}, doi = {10.1103/Physics.3.61}, url = {http://link.aps.org/doi/10.1103/Physics.3.61}, publisher = {American Physical Society} }