Cite
MLA Citation
F G Mertens et al.. “Improved upper limits on the 21 cm signal power spectrum of neutral hydrogen at z ≈ 9.1 from LOFAR.” Monthly notices of the Royal Astronomical Society, vol. 493, no. 2, 2020, pp. 1662–1685. http://access.bl.uk/ark:/81055/vdc_100101669015.0x00005c