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Artamonov, D. , Tsibulnikova, A. , Samusev, I. , Bryukhanov, V. , Kozhevnikov, A.. "Optically Active Material Based on Bi2O3@Yb3+, Nd3+ with High Intensity of Upconversion Luminescence in the Red and Green Region". World Academy of Science, Engineering and Technology, Open Science Index 207, International Journal of Psychological and Behavioral Sciences, (2024), 18(3), 20 - 23.