@article{10_4064_aa140_2_5,
     author = {Takuya Okamoto},
     title = {Generalizations of {Apostol{\textendash}Vu} and {Mordell{\textendash}Tornheim
} multiple zeta functions},
     journal = {Acta Arithmetica},
     pages = {169--187},
     publisher = {mathdoc},
     volume = {140},
     number = {2},
     year = {2009},
     doi = {10.4064/aa140-2-5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa140-2-5/}
}