@article{10_4007_annals_2003_157_891,
     author = {Erez Lapid and Stephen Rallis},
     title = {On the nonnegativity of $L(\frac{1}{2},\pi)$ for ${\rm SO}_{2n+1}$},
     journal = {Annals of mathematics},
     pages = {891--917},
     publisher = {mathdoc},
     volume = {157},
     number = {3},
     year = {2003},
     doi = {10.4007/annals.2003.157.891},
     mrnumber = {1983784},
     zbl = {1067.11026},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2003.157.891/}
}