Hidden portrait 'found under Mona Lisa': French scientist

French scientist Cotte says he has found an image of a portrait underneath the existing Mona Lisa painting using reflective light technology

Scientists discover Leonardo's 'Mona Lisa' oil-paint recipe

Hidden portrait found under Mona Lisa

Hidden Portrait' Found Under Mona Lisa: French Scientist

Mona Lisa Painting: A Scientific Analysis on Vinci's Best Art

Mona Lisa': Hidden portraits 'found underneath

High-Res Image Scan Detects Hidden Drawing Under The 'Mona Lisa

Is there another woman behind Mona Lisa? – DW – 12/10/2015

French scientist claims to find hidden portrait under 'Mona Lisa

Hidden portrait 'found under the Mona Lisa', could lead to it being renamed, The Independent

Scientist Discovers Hidden Portrait Beneath The Mona Lisa