“…Xu (1993), Echevarria (1997), Kongsamut et al (2001), Buera and Kaboski (2006) and Ngai and Pissarides (2007) assume exogenous technical progress, at the same or differing rates across sectors, while Stokey (1988) allows for learning-by-doing in one sector (manufacturing) but not in another (agriculture). Meckl (2002), Klenow (1996), and Acemoglu and Guerrieri (2006) adopt the EPV framework of RGH, as we do: RGH assume a single final-goods sector, whereas these models are multisectoral.…”