Database support for solid modeling. - Xu Yu 004; Nobuo Ohbo; Takashi Masuda; Yuzuru Fujiwara (Vis. Comput., 1986)

Integration of Functional Data Model into Programming Environment: Application to Solid Database. - Xu Yu 004; Nobuo Ohbo; Hiroyuki Kitagawa; Yuzuru Fujiwara (VDB, 1989)

Decomposition - An Approach for Optimizing Queries Including ADT Functions. - Hanxiong Chen; Xu Yu 004; Kazunori Yamaguchi; Hiroyuki Kitagawa; Nobuo Ohbo; Yuzuru Fujiwara (Inf. Process. Lett., 1992)