@inproceedings{TUW-107730, author = {Grasser, Tibor and Kosina, Hans and Selberherr, Siegfried}, title = {{O}n the {V}alidity of the {R}elaxation {T}ime {A}pproximation for {M}acroscopic {T}ransport {M}odels}, booktitle = {{P}roceedings of the {I}nternational {C}onference on {S}imulation of {S}emiconductor {P}rocesses and {D}evices ({S}{I}{S}{P}{A}{D})}, year = {2004}, pages = {109--112}, publisher = {{S}pringer}, url = {http://www.iue.tuwien.ac.at/pdf/ib_2005/CP2004_Grasser_2.pdf}, isbn = {3211224688}, doi = {10.1007/978-3-7091-0624-2{\_}26}, note = {talk: {I}nternational {C}onference on {S}imulation of {S}emiconductor {P}rocesses and {D}evices ({S}{I}{S}{P}{A}{D}), {M}unich, {G}ermany; 2004-09-02 -- 2004-09-04} }