Her romanized artist family name is not Yuuki but Youki...
I can understand that 結城 is mostly romanized as Yuuki like for Nobuteru Yuuki (結城信輝) but many websites are wrong on this one... A bit surprising, knowing that the info is there on her releases and in some books like Sudio Tron Art Book 1993.
You can check front/back covers of EP in her discography.
I'll add these 2 not on VGMdb:
- Back cover of her 1st single:
http://www.ds-sounds.jp/cart/img.php....jpg&scale=400
- 1st album:
http://www.amazon.co.jp/MY-STORM-%E7...t_mus_dp_dpt_1 (contains OP/ED from Zillion TV & OVA, songs from Appleseed and Kujakuou)
To my knowledge, her name was never romanized "Yuuki"
on other official releases.
Like Alice Sato or Youri Sugimoto, I think we should stick to the official name.