BibTex format
@article{Schmit:2019:mnras/sty3400,
author = {Schmit, CJ and Heavens, AF and Pritchard, JR},
doi = {mnras/sty3400},
journal = {Monthly Notices of the Royal Astronomical Society},
pages = {4259--4275},
title = {The gravitational and lensing-ISW bispectrum of 21 cm radiation},
url = {http://dx.doi.org/10.1093/mnras/sty3400},
volume = {483},
year = {2019}
}