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APA Citation
Middei, R., Giommi, P., Perri, M., Turriziani, S., Sahakyan, N., Chang, Y. L., Leto, C., & Verrecchia, F. (2022). the first hard X-ray spectral catalogue of Blazars observed by NuSTAR. Monthly notices of the Royal Astronomical Society, 514(3), 3179–3190. http://access.bl.uk/ark:/81055/vdc_100158014580.0x000046