I am working on my master thesis, where I investigate the impact of the Russian embargo on Georgia's exports. I have already identified my dependent variable, as well as the variables of interest. Currently, I am working to include control variables in my model. Since this is not typical gravity equations, some of the variables from gravity studies are useless for me. Would you recommend any literature, which establishes the causal link between a SINGLE country's export and different variables of interest?
I am here for the first time, thus if you need more specification, feel free