Sandoghdar, Vahid, Enrico Klotzsch, Volker Jacobsen, Alois Renn, Ulf Håkanson, Mario Agio, Ilja Gerhardt, Johannes Seelig, and Gert Wrigge. “Optical Detection of Very Small Nonfluorescent Nanoparticles”. CHIMIA 60, no. 11 (November 29, 2006): 761. Accessed February 21, 2024. https://www.chimia.ch/chimia/article/view/2006_761.