@article{CM_1988__68_2_125_0,
     author = {Adolphson, Alan and Sperber, Steven},
     title = {On the degree of the $L$-function associated with an exponential sum},
     journal = {Compositio Mathematica},
     pages = {125--159},
     publisher = {Kluwer Academic Publishers},
     volume = {68},
     number = {2},
     year = {1988},
     mrnumber = {966577},
     zbl = {0665.12022},
     language = {en},
     url = {http://www.numdam.org/item/CM_1988__68_2_125_0/}
}