Nondetection of Helium in the Upper Atmospheres of Three Sub-Neptune Exoplanets
https://iopscience.iop.org/article/10.3847/1538-3881/abbee6
The Demographics of Exoplanets
https://arxiv.org/abs/2011.04703
A Search for Technosignatures Around 31 Sun-like Stars with the Green Bank Telescope at 1.15-1.73 GHz
https://arxiv.org/abs/2011.05265