Economies of Scope in Portuguese Local Government Using an Augmented Hicks-Moorsteen Approach
Paulo Caldas, Diogo Ferreira, Brian Dollery, Rui Cunha Marques
Regional Studies, vol. 53, 2019, p. 963-976.

Productivity Growth and Biased Technological Change: Credit Banks in Japan
Carlos Pestana Barros, Shunsuke Managi, Roman Matousek
Journal Of International Financial Markets, Institutions And Money, vol. 19, 2009, p. 924-936.

Productivity Change of Nigerian Insurance Companies: 1994-2005
Carlos Pestana Barros, Ade Ibiwoye, Shunsuke Managi
African Development Review/Revue Africaine De Developpement, vol. 20, 2008, p. 505-528.