OLEJNIK, A.; ŻÓŁTASZEK, A.; OLEJNIK, J. Spatial Solution to Measure Regional Efficiency — Introducing Spatial Data Envelopment Analysis. Economy of Regions, [S. l.], v. 17, n. 4, p. 1166–1180, 2021. DOI: 10.17059/ekon.reg.2021-4-9. Disponível em: https://economyofregions.org/ojs/index.php/er/article/view/82. Acesso em: 17 may. 2024.