@misc{indiciaec54bd5780f15, title = {Freezing-in gravitational waves}, author = {Ghiglieri, Jacopo (ORCID:000000034176857X) and Schütte-Engel, Jan (ORCID:000000017905237X) and Speranza, Enrico (ORCID:0000000330766958)}, year = {2024}, doi = {10.1103/physrevd.109.023538}, url = {https://www.osti.gov/biblio/2283474}, note = {Source identifier: 2283474} }