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| Radostina Shopova |
| Economic Research Institute, Bulgarian Academy of Sciences |
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| radostina.shopova@yahoo.com |
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| radostina.shopova@yahoo.com |
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| https://sites.google.com/view/radostinashopova/home |
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JEL Areas:
D4 : Market Structure and Pricing: General
L1 : Market Structure, Firm Strategy, and Market Performance: General |
