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

https://www.strategie.gouv.fr/sites/strategie.gouv.fr/files/atoms/files/fs-livret-seminaire-soutenabilite-covid-19-mai-2020.pdf

https://www.ips-journal.eu/index.php?id=343&L=0&tx_news_pi1%5Bnews%5D=3433&tx_news_pi1%5Bcontroller%5D=News&tx_news_pi1%5Baction%5D=detail&cHash=d423ae64c4b25e2b5dc104f032109b1e