Landabidea Urresti, Xabier. “Xabier Landabidea Urrestiren Tesiaren Laburpena”. Uztaro, no. 92 (March 5, 2015): 109–110. Accessed July 3, 2024. https://aldizkariak.ueu.eus/index.php/uztaro/article/view/4572.