Tiilikkala, K.; Hagner, M.; Penttinen, O.-P.; Pasanen, T.; Setälä, H. Birch tar oil is an effective mollusc repellent: field and laboratory experiments using
[May 5, 2015]. (原始内容存档于2018-02-16). 最高預想建築及結構物列表(英语:List of visionary tall buildings and structures) Tallest Buildings in the Islamic World (2017) (页面存档备份,存于互联网档案馆)