1. PD-100 Black Hornet Nano Unmanned Air Vehicle, https://itc.ua/blogs/pd-100-black-hornet-razvedyivatelnyiynano-dron (16 February 2023).
2. Nano- and microdrones. Not just for Special Forces, https://topwar.ru/165940-nano-i-mikrodrony-polza-dlyaspecialnyh-sil-i-ne-tolko.html (16 February 2023).
3. The company “Kronstadt” proposed to add micro- and nano-drones to the equipment of the “soldiers of the future”, https://www.aex.ru/news/2020/10/19/218059/ (19 February 2023).
4. Robotic fish-photographer BIKI, https://fishki.net (21 March 2023).
5. Choosing the optical materials for multichannel catadioptric systems with Mangin mirrors in the video cameras of miniature drones