Related to the tutorial held by Matteo Perenzoni during ISSCC 2018 about single-photon detection in CMOS using SPADs, an article has been published in the Solid-State Circuits Magazine summer issue:
M. Perenzoni, "Single-Photon Avalanche Diode-Based Detection and Imaging: Bringing the Photodiode Out of Its Comfort Zone," in IEEE Solid-State Circuits Magazine, vol. 10, no. 3, pp. 26-34, Summer 2018.
The article can be found here.