Mardanova Feruza Yadgarovna, and Xusainova Mulkijahon Ismatullayevna. “KELI DARAXTIDA KOMBINATORIK XOSSALAR: DARAXT QIRRALARI MISOLIDA. D-MUNTAZAM DARAXT USTIDA KONTURLAR”. Journal of New Century Innovations, vol. 29, no. 5, May 2023, pp. 185-7, https://newjournal.org/new/article/view/6980.