Hillery-Bu˘§zek-Berthiaume 99 (one- to two-party SS and QSS using three-particle entanglement, and one-to three-party SS using four-particle entanglement),
[Karlsson-Koashi-Imoto 99] (one- to two-party SS using two-particle entanglement, and QSS using three-particle entanglement),
Cleve-Gottesman-Lo 99 (in a (k, n) threshold scheme, a secret quantum state is divided into n shares such that any k shares can be used to reconstruct the secret, but any set of k . 1 shares contains no information about the secret. The ˇ°no-cloning theoremˇ± requires that n < 2k),
Tittel-Zbinden-Gisin 99 (QSS using pseudo-GHZ states),