1. 1. Zimmel J, Girard T (2015) Hoplite Arms and Armor.
2. 2. Lahans M (2015) Ancient Greek Armour, Shields and Helmets.
3. 3. (2015) Gerardus Mercator. Source: Wikipedia
4. 4. (2015) Mercator projection. Source: Wikipedia.
5. Langer's lines: to use or not to use;Wilhelmi;Plast Reconstr Surg,1999