Sirks, E. L., P. Clark, R. J. Massey, S. J. Benton, A. M. Brown, C. J. Damaren, T. Eifler, et al. 2020. “Download by Parachute: Retrieval of Assets from High Altitude Balloons”. Journal of Instrumentation 15 (5): P05014. doi:10.1088/1748-0221/15/05/P05014.