Pohto, Helinä. “Bringing Clarity to the Purely Internal Situations Rule? Case Commentary on the Judgment C-268 15 Ullens De Schooten”. Helsinki Law Review, vol. 12, no. 1, Jan. 2018, pp. 36-49, https://journal.fi/helsinkilawreview/article/view/HelLRev-2018-1-Pohto.