1. The Sardinia Radio Telescope. Web site: https://www.srt.inaf.it/
2. Dual-channel sis receivers for the iram Plateau de Bure Interferometer
3. Optics for the HDV10 Dual Frequency Band Receiver for the Plateau de Bure Interferometer;Carter,1994
4. IRAM Newsletter n°38;Lazareff,1999
5. https://www.raspberrypi.org/products/raspberry-pi-2-model-b/