1. Barlow, H. W. B. and C. R. Hancock. 1956. Internode growth in stoolbed shoots of the apple rootstock Crab C. Rep. E. Malling Res. Sta. for 1956: 89-100.
2. How did we get here? The complex story of human evolution
3. Cody, C. A., F. E. Larsen and R. Fritts, Jr. 1985. Stimulation of lateral branch development in tree fruit nursery stock with GA4 + 7 + BA. HortScience 20: 758-759.
4. 小池洋男.宮川健一.塚原一幸.1983.リンゴわい性台樹の整枝に関する研究(第1報)苗木の副梢(フェザー)発生に対する植物調節剤の効果.長野果試報.1: 10-20.