https://www.google.cz/books/edition/Heimur_okkara_2/ZDzW0Lvi47oC?hl=cs&gbpv=1&dq=Skei%C3%B0bundna+skipanin&pg=PA638&printsec=frontcover https://www.google.cz/books/edition/Heimur_okkara_2/ZDzW0Lvi47oC?hl=cs&gbpv=1&dq=Skei%C3%B0bundna+skipanin&pg=PA638&printsec=frontcover