A. Uragami, R. Ueno, K. Matsuo, T. Yamaguchi, H. Sakai, S. Motoki, T. Takizawa, H. Tokiwa, T. Ikeuchi, S. Watanabe, et al. Contribution of total nitrogen content in storage roots to multiple regression analysis for estimating yield of asparagus in rootstock-planting forcing culture. Acta Horticulturae. 2018. 1223. *. 73-80
Atsuko Uragami, Atsushi Yamasaki, Kentaro Matsuo, Takayuki Yamaguchi, Hideo Tokiwa, Tamio Takizawa, Satoru Motoki, Kuninori Matsunaga, Hiroaki Kitazawa, Shin-ichi Watanabe, et al. Yield estimation of 1-year-old asparagus grown using rootstock-planting forcing culture. The Journal of Horticultural Science and Biotechnology. 2017. 92. 5. 530-538