3. GERHARDT, F., H. ENGLISH and E. SMITH. 1945. Cracking and decay of Bing cherries as related to the pressure of moisture on the surface of the fruit. Proc. Amer. Soc. Hort. Sci. 45: 191-198.
4. 開沼 護. 1989. ハウスでの私のオウトウ栽培. 山形の果実 10(4): 36-38.
5. KERTESZ, Z. I. and B. R. NEBEL. 1935. Observations on the cracking of cherries. Plant Physiol. 10: 763-772.