@article{ASNSP_1993_4_20_3_371_0,
     author = {Markowich, P. A. and Unterreiter, A.},
     title = {Vacuum solutions of a stationary drift-diffusion model},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {371--386},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 20},
     number = {3},
     year = {1993},
     mrnumber = {1256074},
     zbl = {0808.35152},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_1993_4_20_3_371_0/}
}