SN 2015da: late-time observations of a persistent superluminous Type IIn supernova with post-shock dust formation. - Smith, Nathan; Andrews, Jennifer E; Milne, Peter; Filippenko, Alexei V; Brink, Thomas G; Kelly, Patrick L; Yuk, Heechan; Jencson, Jacob E (Monthly Notices of the Royal Astronomical Society, 2024)