Wan, S., Xu, W., Tan, N., Wang, Y., Zheng, Y. & Yu, F. (2017)

Three Excavatum species Tuber badium, T. depressum and T. verrucosivolvum from Sichuan Province, China

. Phytotaxa 296 (3): 228–238. https://doi.org/10.11646/phytotaxa.296.3.2