J. Vejayan, Y. A. Che Yahya, S. Chakravarthi, R. Bathmanathan, H. Ibrahim, and A. Yun, “TONGKAT ALI PLANTS OF EURYCOMA LONGIFOLIA AND STEMA TUBEROSA STIMULATE SEXUAL AROUSAL IN DOMESTIC COCKS”, Malaysian J. Sci., vol. 39, no. 1, pp. 1–14, Feb. 2020.