BibTex format
@article{Helm:2016:10.1215/00127094-3450422,
author = {Helm, DF},
doi = {10.1215/00127094-3450422},
journal = {Duke Mathematical Journal},
pages = {1597--1628},
title = {Whittaker models and the integral Bernstein center for GL_n},
url = {http://dx.doi.org/10.1215/00127094-3450422},
volume = {165},
year = {2016}
}