Analysis of the Enhanced Stability of R(+)-Alpha Lipoic Acid by the Complex Formation with Cyclodextrins oleh Hiroshi Shimosegawa, Rie Nakane, Yoshiyuki Ishida, Yukiko Uekaji, Daisuke Nakata, Kathrin Pallauf, Gerald Rimbach, Seiichi Matsugo, Naoko Ikuta, Hironori Sugiyama, Keiji Terao