Olsson PA, et al. (2000). Molecular and anatomical evidence for a three-way association between Pinus sylvestris and the ectomycorrhizal fungi Suillus bovinus and Gomphidius roseus. Mycological Research 104:1372–1378. (abstract)
doi.org
Binder M, Hibbett DS., M; Hibbett, DS (2006). "Molecular systematics and biological diversification of Boletales". Mycologia. 98 (6): 971–81. doi:10.3852/mycologia.98.6.971. PMID17486973.