Constraining primordial non-Gaussianity by combining next-generation galaxy and 21 cm intensity mapping surveysSheean Jolicoeur, Roy Maartens and Simthembile DlaminiEur. Phys. J. C, 83 4 (2023) 320DOI: https://doi.org/10.1140/epjc/s10052-023-11482-2