Abdullayev, Fahreddin, Oleksiy Dovgoshey, and Mehmet Küçükaslan. “Metric Spaces With Unique Pretangent Spaces. Conditions of the Uniqueness”. Annales Fennici Mathematici 36, no. 2 (August 1, 2011): 353–392. Accessed November 25, 2024. https://afm.journal.fi/article/view/135355.