1. Quantum
Electronics and Laser Spectroscopy (QELS), San Francisco, CA, 2000, https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=901279.
2. Heraeus
Workshop Nr. 231, Trends in Nano-Optics, Bad Honnef,
Germany, 2000, https://www.we-heraeus.stiftung.de.
3. Principles of Nano-Optics
4. Interview
videos and an overview video can be accessed at the video portal of
the Max Planck Institute for the Science of Light, https://video.mpl.mpg.de/cat/20-years-nano-optics.
5. Symposium
Twenty Years of Nano-Optics, Erlangen, Germany, 2017, https://mpl.mpg.de/divisions/sandoghdar-division/events/international-symposium-20-years-nano-optics/.