Kamila Valieva's historic quadruple jump seals team figure skating gold | Winter Olympics Beijing 2022 | The Guardian
Are quintuple jumps in figure skating possible? “Quints” physiology and physics, and what matters in the sport.
What's the difference between a toe loop, an axel, and a lutz? - Quora
How the Quad Jump Is Changing Women's Figure Skating - The New York Times
First woman to land quad at Games, Kamila Valieva fulfills dream of glory - The Japan Times
How Quad Jumps Have Changed Women's Figure Skating | FiveThirtyEight
What Is a Quad in Figure Skating? Kamila Valieva's Historic Jumps at Beijing Olympics – NBC New York
US Figure Skater Ilia Malinin Lands Quad Axel to Take Lead at Grand Prix Finals in Beijing
US teen skater becomes 1st to land all six quads - Taipei Times
Quadruple Loop Nathan Chen - YouTube
What is the '4A' – the most difficult move in figure skating? - Global Times
How Olympic Figure Skaters Break Records with Physics | Scientific American
Quadruple jumps in women's figure skating: What to expect at Olympics
Figure skating star lands quadruple Rittberger jump in training, coach says
Yuzuru Hanyu's Quad Loop Collection - YouTube
A quadruple Axel in competition? “Not anytime soon” for world champion Nathan Chen - Olympic News
How Quad Jumps Have Changed Women's Figure Skating | FiveThirtyEight
Hanyu becomes first figure skater to achieve clean quad loop in official ISU competition
Yuzuru Hanyu didn't land the first ever quadruple axel at the Olympics, but Twitter still loves him | Mashable
Hanyu's quad loop adds to Japan's skating legacy - The Japan Times
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Figure skating jumps, explained - Vox
Figure skating: Hurting Hanyu to avoid quad loop at Autumn Classic
Hanyu Yuzuru becomes the first skater in history to execute quadruple Axel on international stage-Xinhua
FIGURE SKATING | Yuzuru Hanyu Claims Sixth Japan Title, Nearly Lands Historic Quadruple Axel | JAPAN Forward
Malinin's quad axel lifts 17-year-old to Skate America title | AP News
Quadruple jump - Wikipedia
Jumping wizards make possibilities seem endless — Globetrotting by Philip Hersh
