Here is the paper the article talks about: https://www.sciencedirect.com/science/article/pii/S0032579119385505 https://www.sciencedirect.com/science/article/pii

Here is the paper the article talks about: https://www.sciencedirect.com/science/article/pii/S0032579119385505 https://www.sciencedirect.com/science/article/pii/S003257911...