Kidou Senshi Gundam: Gyakushuu no Char - Beltorchika's Children
The original modified Hi Streamer storyline proposed by Tomino for the Mobile Suit Gundam: Char's Counterattack movie, it was rejected and released instead as a novel. (Source: Gundamwikia)
Kidou Senshi Gundam Unicorn
Kidou Senshi Z Gundam