Ablikim, M Measurement of the Branching Fraction For the Semileptonic Decay D^→π^μ^ν_ and Test of Lepton Flavor Universality. [electronic resource] - Physical review letters Oct 2018 - 171803 p. digital Publication Type: Journal Article ISSN: 1079-7114 Standard No.: 10.1103/PhysRevLett.121.171803 doi