1. CMB-S4 Science Book;Abazajian,2016
2. Upper limits on the isotropic gravitational-wave background from Advanced LIGO and Advanced Virgo's third observing run;Abbott;Phys. Rev. D,2021
3. Induced gravitational waves as a cosmological probe of the sound speed during the QCD phase transition;Abe;J. Cosmol. Astropart. Phys.,2021
4. The Simons Observatory: Astro2020 decadal project whitepaper;Abitbol;Bull. Am. Astron. Soc.,2019
5. The string swampland constraints require multi-field inflation;Achúcarro;J. Cosmol. Astropart. Phys.,2019