- Ketel C.L. (2017), Supplies of Chinese porcelain for the Dutch East India Company (VOC) trade post on Formosa from 1624 -1650.
- Ketel C.L. (2015), Shapes and designs of Chinese export porcelains ordered by the Dutch East India Company (V.O.C.) during the first half of the 17th century. Some puzzles. Shanghai: ISAC.