Yamaguchi, Toshiko, and Magnús Pétursson. “Das Isländische Hafa-Perfekt in Zeitungsartikeln”. Linguistica 45, no. 1 (December 31, 2005): 59-84. Accessed May 7, 2021. https://revije.ff.uni-lj.si/linguistica/article/view/4212.