https://api.elsevier.com/content/article/pii/S0040162520312609doi:10.1016/j.techfore.2020.1204341-s2.0-S004016252031260910.1016/j.techfore.2020.120434S0040-1625(20)31260-9Markov-switching dependence between artificial intelligence and carbon price: The role of policy uncertainty in the era of the 4th industrial revolution and the effect of COVID-19 pandemic Technological Forecasting and Social ChangeJournal004016252021-02-28February 20210falsefalse