Nobuo Fujiwara
- The Deveropment Of Willow Woods On Ryushi-works At Yahagi River. Dans: 土木学会論文集 (Doboku Gakkai rombunshū), v. 1998, n. 601 (août 1998). (1998):
- 霞ケ浦におけるアサザ個体群の衰退と種子による繁殖の現状. Dans: Ecology and Civil Engineering, v. 4, n. 1 ( 2001). (2001):