@article{JTNB_2001__13_1_253_0,
     author = {Nopper, Thomas and Wallisser, Rolf},
     title = {Two theorems on meromorphic functions used as a principle for proofs on irrationality},
     journal = {Journal de th\'eorie des nombres de Bordeaux},
     pages = {253--261},
     publisher = {Universit\'e Bordeaux I},
     volume = {13},
     number = {1},
     year = {2001},
     mrnumber = {1838085},
     zbl = {1058.11052},
     language = {en},
     url = {http://archive.numdam.org/item/JTNB_2001__13_1_253_0/}
}