@misc{indiciae37c156b8485f, title = {Probing spacetime foam with extragalactic sources.}, author = {W A Christiansen and Y Jack Ng and H van Dam}, year = {2006}, doi = {10.1103/physrevlett.96.051301}, url = {https://pubmed.ncbi.nlm.nih.gov/16486920/}, note = {Source identifier: 16486920} }