the structure of coordination: Progovac (1998)
see also the new paper by Neeleman, Philip, Tanaka & van de Koot: "Subordination and Binary Branching" (to appear in Syntax)
some (overview) papers (for ATB) -- references are in the slides: Munn (1993), Nunes (2001), Citko (2005), Salzmann (2012a), de Vries (2017), Hein & Murphy (2020):