BibTex format
@article{Ben:2001:10.1007/PL00001544,
author = {Ben, Abdallah N and Degond, P and Markowich, P and Schmeiser, C},
doi = {10.1007/PL00001544},
journal = {ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND PHYSIK},
pages = {201--230},
title = {High field approximations of the spherical harmonics expansion model for semiconductors},
url = {http://dx.doi.org/10.1007/PL00001544},
volume = {52},
year = {2001}
}