@article{CMH_1977__52_139682,
     author = {K. Chandrasekharan},
     title = {Exponential sums associated with the {Dedekind} zeta-functions.},
     journal = {Commentarii mathematici Helvetici},
     pages = {49--88},
     year = {1977},
     volume = {52},
     zbl = {0366.10030},
     url = {http://geodesic.mathdoc.fr/item/CMH_1977__52_139682/}
}