Interesting article about Lutz and Flip, all from Russian coaches but with different opinions about technique, what would be the best thing what to do, etc.:
https://fs-gossips.com/there-are-very-few-skaters-who-jump-lutz-and-flip-equally-perfect/.
https://fs-gossips.com/there-are-very-few-skaters-who-jump-lutz-and-flip-equally-perfect/.