Lansbury, G., Alexander, D., Aird, J., Gandhi, P., Stern, D., Koss, M., …Zappacosta, L. (2017). The NuSTAR Serendipitous Survey: Hunting for the Most Extreme Obscured AGN at >10 keV. Astrophysical Journal, 846(1), Article 20. https://doi.org/10.3847/1538-4357/aa8176