Parijskij, Y.; Temirova, A.; Bursov, N.; Semenova, T.; Kudryashova, A. Objects With Ultra-Steep Spectra in the Central Section of the RATAN Zenith Field (RZF) Survey. Acta Astrophys. Tau. 2023, 4 (1), 1-7. https://doi.org/10.34898/aat.vol4.iss1.pp1-7.