1. J. Kost, R. Langer, Magnetically and ultrasonically modulated drug delivery systems, in: J. Kost (Ed.), Pulsed and Self-regulated Drug Delivery, CRC Press, Boca Raton, 1990, pp. 3–16.
2. Ultrasonically controlled polymeric drug delivery;Kost;Makromol. Chem. Makrom. Symp.,1988
3. External control of drug release: Controlled release of insulin from hydrophilic polymer implant by ultrasound irradiation in diabetic rats;Miyazaki;J. Pharm. Pharmacol.,1988
4. Ultrasound-enhanced polymer degradation and release of incorporated substances;Kost;Proc. Natl. Acad. Sci. USA,1989
5. The effect of ultrasound irradiation on a biodegradable 50–50% copolymer of polylactic and polyglycolic acids;Agrawal;J. Biomed. Mater. Res.,1994