Cydonia (Mars) - Wikipedia
face on Mars - The Skeptic's Dictionary
NASA Mars Picture of the Day: Crater in Cydonia - SpaceRef
Are There Pyramids on Mars? The Cydonia Mars' Mysterious Region
DLR - Mars Express - The Cydonia Region – The Face On Mars
UFO - Ufology - Mars - Cydonia - City on Mars
Cydonia: Martian Mystery Region
Are There Pyramids on Mars? The Cydonia Mars' Mysterious Region
Mars nuclear explosion photograph debunked
ESA - Cydonia - the face on Mars
PDF] Digital imagery analysis of unusual Martian surface features
Is There Love on Mars? Yes – NBC 7 San Diego