Before revision: The principles were articulated in various publications, the first prominent one appearing in Danish in 1908.Axel Olrik, 'Episke love i folkedigtningen', Danske Studier, 5 (1908): 69-89 URL
After revision: ).The principles were articulated in various publications, the first prominent one appearing in Danish in 1908.Axel Olrik, 'Episke love i folkedigtningen', Danske Studier, 5 (1908): 69-89 URL