Karadzhov, Tsanko, Dimcho Pulov, and Nikolay Angelov. 2019. “CONTACTLESS MEASURING OF TEMPERATURE WITH DIFFERENTIAL PHOTO RECEIVER”.
ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference 3 (June): 101-4.
https://doi.org/10.17770/etr2019vol3.4132.