@article{10_4064_aa_89_3_217_234,
     author = {Jeffrey Lagarias},
     title = {On a positivity property of the {Riemann} \ensuremath{\xi}-function},
     journal = {Acta Arithmetica},
     pages = {217--234},
     publisher = {mathdoc},
     volume = {89},
     number = {3},
     year = {1999},
     doi = {10.4064/aa-89-3-217-234},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-89-3-217-234/}
}