Baringer, Philip S.2014-10-082014-10-081986-03-10Baringer, Philip S. et al. (1986). "Upper Limit on the Tau-Neutrino Mass." Physical Review Letters, 1986(56):1039. http://dx.doi.org/10.1103/PhysRevLett.56.10390031-9007https://hdl.handle.net/1808/15226This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.56.1039.Article10.1103/PhysRevLett.56.1039openAccess