Thapanon Rungwittayatiwat และ Sira Suchintabandid. (2019) The impacts of Volatility Spread and Timing on writing non-directional options strategies. Chulalongkorn University:ม.ป.ท.Thapanon Rungwittayatiwat และ Sira Suchintabandid. 2019. The impacts of Volatility Spread and Timing on writing non-directional options strategies. ม.ป.ท.:Chulalongkorn University;Thapanon Rungwittayatiwat และ Sira Suchintabandid. The impacts of Volatility Spread and Timing on writing non-directional options strategies. ม.ป.ท.:Chulalongkorn University, 2019. Print.