The Huk system was a star system located in Wild Space. It contained the planet Huk. The Essential Atlas (First mentioned) Star Wars: The Essential Atlas Online Companion on StarWars.com (article) (backup link)
Star Wars: The Story of General Grievous
Yam'rii - D6Holocron
Anakin Skywalker, sithpacify
Star Wars: The Essential Guide to Warfare Author's Cut, Part 12: Tales of the New Republic
Star Wars: The Last Qymaili - Appendix A: Grievous - Wattpad
Heretic's Guide to the Galaxy
Why is General Grievous so hated? - Quora
CHAR] Star Wars - Rancor Company — Roleplayer Guild
Star Wars - CLOSED - Star Wars: Episode VI: Twilight of the Force III: A Son's Destiny, Page 2
Chapter 26 - Sublight Drive (Star Wars)
Star Wars : Timelines OOC/Discussion Thread, Page 34
STAR WARS: Ashes of the Republic
Did General Grievous always have four arms, or did he get then as an upgrade after he had killed four Jedi? - Quora
Kleeva system, Wookieepedia