1. D. N. Pegler, B. M. Spooner and T. W. K. Young, British truffles, Whitstable Litho, Kent, UK. (1993).
2. O. Mattirolo, Sul parassitismo dei tartufi e sulla questione delle micorrize, Atti R. Acad. Agric. Torino, 107:131 (1887).
3. A. Fontana, Sintesi micorrizica tra Pinus strobus e Tuber maculatum, Giorn.Bot.Ital 101:298 (1967).
4. J. L. Harley and S. E. Smith, Mycorrhizal symbiosis Academic Press, London (1993).
5. J. M. Trappe, The Orders, Families, and Genera of Hypogeus Ascomycotina (truffles and their relatives), Mycotaxon ,9:297 (1979).