Mirzaabolghasemi, M., Aelaei, M., Kheiry, A., & Ghahremani, Z. "Effect of γ-aminobutyric acid and spermine on morphophysiological traits and pigmentation of Rosa damascena Mill. ", Iranian Journal of Horticultural Science, 52, 1, 2021, 47-60. doi: 10.22059/ijhs.2019.272763.1575