5Claus H., H. O. Hoppen, H. Karg. The secret of turffles: a steroidal pheromone? [J]. Experientia, 1981, 37:1178 - 1179.
6Hall, Ian R., Gordon Brown & James Byars. The black truffle, its history, uses and cultivation, second edition.In: New Zealand institute for crop & food research limited,1994, 92- 98.
7Chevalier, G., J. Grente. Application pratiquee de la symbiose ectomycorhzienne: production a grande echelle de plants mycorhizes par la truffe ( Tuber melanosporum vitt. )In: Mushroom Sicence X, Proceedings of the tenth international congress, on the science and cultivation of edible fungi, France, 1978.
8Le Tacon, Francois, Jean Garbaye and Gooff Carr. The use of mycorrhizas in temperate and tropical forests [ J ].Symbiosis, 1987, 3: 179-206.
9Wang Yun, G. Moreno et al. Tuber pseudoexcavatum sp.nov., a new species from China commercialised in Spain,France and Italy with additional comments on Chinese truffles[J]. Crytogamie mycology,. 1998, 19(1-2): 113-120.
10O. Comandini, G. pacioni. Mycorrhizae of Asian black truffles, Tuber himalayense and T. indicum [ J ]. Mycotaxon volume, 1997, LXⅢ, 77 - 86.