Principal component analysis is used in the study of 24 raw materials for the production of Chinese greenware porcelains, known as Yue ware, Longquan ware, Southern Song Guan ware, Ge ware, Ru ware, Linru ware, Jun ware, and Yaozhou ware. The results of this study give reasonably good indications of the possible raw materials used in the production of these greenwares.
Choon-Teck Yap and Younan Hua, "Chinese Greenware Raw Materials: Principal Component Analysis of Major and Minor Chemical Constituents," Appl. Spectrosc. 49, 981-986 (1995)