Joseph Kost: Ultrasound-assisted insulin delivery and noninvasive glucose sensing. Diabetes Techn. Therap. 4/4 (2002), 489-... Robert Langer: Drug delivery - drugs on target. Science 293 (2001), 58-... 16469 Robert Langer: Medikamente direkt zum Ziel. Spektrum 2004/3, 42-48.