APA (7th ed.) Citation

Barina, D. (2018). $7x\pm1$: Close Relative of Collatz Problem.

Chicago Style (17th ed.) Citation

Barina, David. $7x\pm1$: Close Relative of Collatz Problem. 2018.

MLA (9th ed.) Citation

Barina, David. $7x\pm1$: Close Relative of Collatz Problem. 2018.

Warning: These citations may not always be 100% accurate.