Liu, J.-C. ., and M. . Yeats. “The Anomaly of 28 Days Between the Ex-Dividend and Payment Dates in Taiwanese Stock Markets”. Asian Economic and Financial Review, vol. 5, no. 9, Sept. 2015, pp. 1091-18, doi:10.18488/journal.aefr/2015.5.9/102.9.1091.1118.