GDP and shadow economy "More Americans Work in the Shadow Economy" by Zumbrun, Joshua "Cultural Implications for the Shadow Economy" by Buszko, Andrzej Tomasz "On Estimating the Size of the Shadow Economy by Kirchgssner, G "Shadow Economies on the Rise Around the World" by Prentice, Chris 1. What does the term 'shadow economy' mean? 2. How does the shadow economy affect GDP in different countries? 3. What are the main factors influencing the shadow economy? 4. Why is the shadow economy a challenge for the governments