@article{10_4064_aa111_4_2,
     author = {Chun-Gang Ji and Hong-Wen Lu},
     title = {Lower bound of real primitive $L$-function at $s=1$},
     journal = {Acta Arithmetica},
     pages = {405--409},
     publisher = {mathdoc},
     volume = {111},
     number = {4},
     year = {2004},
     doi = {10.4064/aa111-4-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa111-4-2/}
}