References:
- http://www.biography.com/news/marie-curie-biography-facts
- https://www.mariecurie.org.uk/who/our-history/marie-curie-the-scientist
- https://www.nobelprize.org/nobel_prizes/physics/laureates/1903/marie-curie-facts.html
- http://www.famousscientists.org/marie-curie/
- https://en.wikipedia.org/wiki/Marie_Curie
- https://blogs.loc.gov/inside_adams/2015/03/marie-curie-a-gift-of-radium/