@misc{MielkePeschkaRotundoetal.2016, author = {Alexander Mielke and Dirk Peschka and Nella Rotundo and Marita Thomas}, title = {Gradient structures for optoelectronic models of semiconductors}, institution = {Weierstraß-Institut f{\"u}r Angewandte Analysis und Stochastik (WIAS)}, type = {preprintmatheon}, year = {2016}, }