1) Hosoya, M. & Hayashi, K. (1977): Studies on the cropping type in the glasshouse carnations. 1. Influence of planting time in seasonal cropping system on the flowering time and flower quality. <i>Bull. Chiba Hortic. Exp. Stn.</i>, <b>8</b>, 17-26 [In Japanese with English summary].
2) Imamura, H. & Suto, K. (1997) : Prediction of flowering period and a method of cultivation of carnation for Mother′s Day. <i>J. Jpn. Soc. Hortic. Sci</i>., <b>66</b> (suppl. 2), 568-569 [In Japanese].
3) Imamura, H. & Suto, K. (1998): Effects of the timing of the last pinch and the expansion of use range in concentrated flowering technique for carnations. <i>J. Jpn. Soc. Hortic. Sci</i>., <b>67</b> (suppl. 2), 431 [In Japanese].
4) Nimura, M. et al. (1996): Studies on the flowering prediction of carnation. J. Jpn. Soc. Hortic. Sci., 65 (suppl. 1), 426-427 [In Japanese].
5) Nimura, M. & Ito, K. (1997): Studies on the flowering prediction of carnation. 2. The relation between flower bud size and developmental index (DVI). <i>J. Jpn. Soc. Hortic. Sci</i>., <b>66</b> (suppl. 2), 566-567 [In Japanese].