In my study, I hypothesize that the amount of research produced by a specific country is a function of the country's population size and GDP. This stems from the thought that the higher the number of people, the higher might be the number of researchers in the country and that the higher the GDP, the higher will be the amount of money directed for research. Although my results validate this hypothesis, I can't find publications supporting (or not) this theory and as such my discussion is still very poor. Any help is welcome and will be acknowledged.