Michael, Mike and Rosengarten, Marsha. 2014. Quantitative Objects and Qualitative Things: Ethics and HIV Biomedical Prevention. In: Eleanor Casella; Gillian Evans; Penelope Harvey; Hannah Knox; Chris McLean; Elizabeth Silva; Nick Thoburn and Kath Woodward, eds. Objects and Materials. A Routledge Companion. Great Britain: Routledge, pp. 349-358. ISBN 0415678803 [Book Section]