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

Mona Lisa': Hidden portraits 'found underneath

Leonardo da Vinci's brilliance endures 500 years after his death

Mona Lisa copy to go under the hammer in Paris auction

Leonardo and Mathematics - The Mona Lisa Foundation

Mona Lisa mystery: Scientist finds hidden portrait under Leonardo da Vinci's painting

Mona Lisa': Hidden portraits 'found underneath

Mona Lisa - Art - Report - The New York Times

Hidden portrait 'found under Mona Lisa', says French scientist - BBC News

French scientist discovers a hidden painting under the Mona Lisa

NOVA, Decoding da Vinci, Season 46, Episode 21

Meet the real Mona Lisa, born and raised in Florence and follow her steps in a walking tour