Castro, Paulo R.C., et al. “ Effects of Vernalization and Plant Regulators on Growth and Flowering of Lilium Longiflorum Thunb ”. Anais Da Escola Superior De Agricultura Luiz De Queiroz, vol. 36, Jan. 1979, pp. 99-118, https://doi.org/10.1590/S0071-12761979000100007.