“…This literature follows the innovative works by Diewert (), Donovan (), and Barnett (, , , ) and utilizes the flexible functional forms approach to investigating the inter‐related problems of estimation of monetary asset demand functions and monetary aggregation. See, for example, Ewis and Fisher (, ), Serletis and Robb (), Serletis (, , ), Barnett, Fisher, and Serletis (), Fisher and Fleissig (, ), Fleissig and Swofford (), Fleissig and Serletis (), Serletis and Shahmoradi (, ), Jones et al. (), Barnett and Serletis (), and Barnett (), among others.…”