6Akiyama, et al. 2002. The vegetation recovery after hillside revegetation work at landslide scar[J]. J. Jpn. Soc. Reveget. Tech., 27(4):605-609.
7Yoshida, et al. 2002. A study on the effect of slope-stabilization and the root system of trees on cutting slopes[J]. J. Jpn. Soc.Reveget. Tech. ,27(4) :610-616.
8Yoshida, et al. 2002. The evaluation of tree seeding works by follow-up survey[J]. J. Jpn. Soc. Reveget. Tech., 27(4):617-622.
9Yoshida, Hiroshi. 2002. A study on the mixed seeding technology of woody plants by spraying thick cultivative base[J]. J. Jpn.Soc. Reveget . Tech., 27(4):594-604.