“…13 See, among others, Burkhardt (2005), Späth (2007), Grohmann (2009), Ramchand and Reiss (2012, Rothman and Slabakova (2011). Studies of the interfaces in relation to Romance data include Rizzi and Savoia (1993), Zubizarreta (1998), Elordieta et al (2003), D'Imperio et al (2005), Rao (2008), Silvestri (2009, Folli and Ulbrich (2010), Scheer (2011), Cruschina (2012), D'Alessandro and Scheer (2015, Fischer and Gabriel (2016), Manzini and Savoia (2016), Ledgeway (2018b;2021a), Cruschina, Ledgeway, and Remberger (2019).…”