Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Fotis G. Kalantzis and Nikolaos T. Milonas,Analyzing the impact of futures trading on spot price volatility: Evidence from the spot electricity market in France and Germany,Energy Economics,0140-9883,Elsevier BV,2013-03,36,,454-463,https://cir.nii.ac.jp/crid/1360294648045734400,https://doi.org/10.1016/j.eneco.2012.09.017