Progress in development of renewable electricity in Northern Europe in the context of the EU 2020 renewables targetCross, Sam; Hast, Aira; Syri, Sanna; Kuhi-Thalfeldt, Reeli; Valtin, Juhan2013 10th International Conference on the European Energy Market (EEM) : 27-31 May 2013, Stockholm, Sweden2013 / [8] p. :ill