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

A French Scientist Says the Mona Lisa is Hiding a Portrait of Another Woman, Smart News

How Leonardo da Vinci Made Mona Lisa Smile - The Atlantic

Scientist Claim Secret Portrait of 'REAL' Mona Lisa Lies Underneath

Secret portrait hidden under Mona Lisa, French scientist claims — RT World News

Scientist Discovers Hidden Portrait Beneath The Mona Lisa

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

On using science to unlock the secrets of the Mona Lisa

Mona Lisa — Discovering da Vinci

Leonardo da Vinci news: Mona Lisa's hidden dots show secret alterations to famous painting, World, News

Mona Lisa second portrait spotted under Leonardo da Vinci's masterpiece

Scientists Learn Another 'Mona Lisa' Secret

There is a hidden portrait behind the Mona Lisa, claims scientist