“…Comparative work has emerged such as that of the International Research Study of Public Procurement (Brammer and Walker, 2011;Knight et al, 2012;Walker et al, 2012;Harland et al, 2019;Lynch et al, 2019) and work undertaken to understand the role of procurement in aid (Wild and Zhou, 2011;La Chimia and Trepte, 2019;Moshtari et al, 2021) as well as the descriptive and statistical information available from the OECD series ("Government at a Glance", 2019). Yet, some researchers conclude that there is still no hard evidence for cross-country learning, and that if it does exist, learning is only implicit, at least as it relates to cross-country learning on public procurement on sustainability and innovation (Nijboer et al, 2017).…”