@patent{blau_implantierbarer_2004,
 author = {Blau, M. and Bornitz, M. and Zahnert, T. and Hofmann, G. and Hüttenbrink, K. B.},
 title = {Implantierbarer elektromechanischer Wandler},
 year = {2004},
 number = {DE 103 01 723},
}