
https://blogs.lse.ac.uk/europpblog/2023/03/08/nilde-iotti-and-european-democracy/

https://knowledge.wharton.upenn.edu/article/can-election-polls-be-trusted/

https://theconversation.com/dividendos-noticias-financieras-y-sentimientos-un-trio-que-ayuda-a-predecir-el-valor-de-mercado-de-una-empresa-225500