Takahashi, Ohara, Sato, Nakano, Sasaki, 2019. Harvesting Two Heads from One Stock of Broccoli (<i>Brassica oleracea</i> L. var. <i>Italica</i>) 'Yumehibiki' by Pinching the Shoot Apical Bud in Autumn Cropping.. https://doi.org/10.2503/hortj.utd-018