Parijskij, Y., Temirova, A., Bursov, N., Semenova, T., & Kudryashova, A. (2023). Objects with ultra-steep spectra in the central section of the RATAN Zenith Field (RZF) survey. Acta Astrophysica Taurica, 4(1), 1–7. https://doi.org/10.34898/aat.vol4.iss1.pp1-7