Lusso, E., Fumagalli, M., Rafelski, M., Neeleman, M., Prochaska, J. X., Hennawi, J. F., …Theuns, T. (2018). The Spectral and Environment Properties of z ∼ 2.0–2.5 Quasar Pairs. Astrophysical Journal, 860(1), Article 41. https://doi.org/10.3847/1538-4357/aac514