Liang Song-Yun, Zhang Wu-Xiu. [J]. Journal of Systematics and Evolution, 1984, 22(4): 297-300.
Liang Song-Yun, Zhang Wu-Xiu. Pollen Tetrads in Lilium with a Discussion on the Delimitation Between L.semer vivoideum and Its Ally[J]. J Syst Evol, 1984, 22(4): 297-300.