[11] Danmarks Riges Historie, i., 322-324.
[12] Snorre, Saga of Hakon the Good, cc. 3, 4, 5, 10.
[13] Snorre, Olaf Trygvesson's Saga, c. 15. See also Munch, Del norske Folks Historie, I., ii., 53.
[14] Thietmar, Chronicon, ii., c. 20.
[15] Snorre, Olaf Trygvesson's Saga, cc. 24, 26-28.
[16] Danmarks Riges Historie, i., 340-341.
[17] Snorre, Olaf Trygvesson's Saga, cc. 35-52.
[18] Gesta Danorum, 327.
[19] Adamus, Gesta, ii., c. 26. Saxo, Gesta, 332.
[20] Gesta, ii., cc. 3, 26.