Isea Raúl, A New Graph to Display the Epidemic Outbreaks of Covid-19 in the World, International Journal of Coronaviruses, Volume 1, Issue 4, 2020, Pages 1-3, ISSN 2692-1537, https://doi.org/10.14302/issn.2692-1537.ijcv-20-3498.
(http://oap-journals.infoijcv/article/1423)
Keywords: Covid-19; Outbreak; Mathematics; 2019-nCoV; Epidemic