Burden, R.P. (1997). "An analysis of the shapes of sea ice ridges". Cold Regions Science and Technology. 25 (1). Elsevier BV: 65—77. doi:10.1016/s0165-232x(96)00017-1
Applied to the Modern Russo-Ukrainian Conflict over the Donbas and Crimea Regions // Multicultural Societies and their Threats / eds. Nazarii Gutsul, Kristina
Timber Press, 1990. — P. 309–316. Kiwifruit production in 2017, Crops/Regions/World list/Production Quantity (pick lists) (неопр.). UN Food and Agriculture
Hudud al-'Alam, The Regions of the World A Persian Geography, 372 A.H. - 982 A.D.] (англ.) / Минорский В. Ф.. — Лондон: Oxford University Press, 1937. Архивировано