Yasukawa, K. (2015) “Inhibitory Effects of the Flower of Canadian Goldenrod (Solidago altissima L.) on Tumour Promotion Induced by 12-O-tetradecanoylphorbol-13-actete”, Journal of Nutritional Therapeutics, 4(3), pp. 76–80. doi: 10.6000/1929-5634.2015.04.03.1.