المؤلفون: Hanssen, Sveinn Are, Frivoll, Vigdis, Strann, Karl-Birger, Hagtvedt, Matias, Sommervold, Per Steinar, Ballesteros, Manuel
الإتاحة: https://hdl.handle.net/11250/2689803
الإتاحة: http://hdl.handle.net/11250/2628655