@article{10_4064_aa134_1_5,
     author = {Takashi Nakamura},
     title = {Joint value approximation and joint universality
 for several types of zeta functions},
     journal = {Acta Arithmetica},
     pages = {67--82},
     publisher = {mathdoc},
     volume = {134},
     number = {1},
     year = {2008},
     doi = {10.4064/aa134-1-5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa134-1-5/}
}