Russian skater Kamila Valieva, 15, becomes 1st woman to land a quad at Olympics : NPR
Figure skating: Hurting Hanyu to avoid quad loop at Autumn Classic
Figure skating jumps explained: What to know for 2022 Winter Olympics
First woman to land quad at Games, Kamila Valieva fulfills dream of glory - The Japan Times
How the Quad Jump Is Changing Women's Figure Skating - The New York Times
Kamila Valieva makes Olympic history with quadruple jumps - The Washington Post
Are quintuple jumps in figure skating possible? “Quints” physiology and physics, and what matters in the sport.
Jumping wizards make possibilities seem endless — Globetrotting by Philip Hersh
US figure skater Ilia Malinin lands 1st quad axel in competition
Kamila Valieva's historic quadruple jump seals team figure skating gold | Winter Olympics Beijing 2022 | The Guardian
What Is a Quad in Figure Skating? Kamila Valieva's Historic Jumps at Beijing Olympics – NBC New York
Quadruple Loop Nathan Chen - YouTube
Hanyu Yuzuru becomes the first skater in history to execute quadruple Axel on international stage-Xinhua
Japan's Yuzuru Hanyu lands 1st-ever quad loop in competition | CBC Sports
Quad revolution comes in force to women's figure skating - NBC Sports
Women's Skating Quad Jumps History: Surya Bonaly Tried to Do It 30 Years Ago | TIME
Quadruple jump - Wikipedia
Quadruple Toe Loop Yuzuru Hanyu - YouTube
Malinin's quad axel lifts 17-year-old to Skate America title | AP News
Watch Kamila Valieva land 1st women's quad at Winter Olympics | 11alive.com
Yuzuru Hanyu's Quad Loop Collection - YouTube
