Time delays of strings in D-particle backgrounds and vacuum refractive indices
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Citation
Li, Tianjun; Mavromatos, Nick E.; Nanopoulos, Dimitri V.; Xie, Dan (2009). Time delays of strings in D-particle backgrounds and vacuum refractive indices. Physics Letters, B. Available electronically from https : / /hdl .handle .net /1969 .1 /183570.