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García-Pérez, A.; etal. (March 2024), "Powerful Radio Sources in the Southern Sky. III. First Results of the Optical Spectroscopic Campaign", The Astrophysical Journal Supplement Series, 271 (1), id. 8, Bibcode:2024ApJS..271....8G, doi:10.3847/1538-4365/ad159e, hdl:11336/257585.
García-Pérez, A.; etal. (March 2024), "Powerful Radio Sources in the Southern Sky. III. First Results of the Optical Spectroscopic Campaign", The Astrophysical Journal Supplement Series, 271 (1), id. 8, Bibcode:2024ApJS..271....8G, doi:10.3847/1538-4365/ad159e, hdl:11336/257585.