Yoshikawa, Kazuko; Kokudo, Naoki; Tanaka, Masami; Nakano, Tatsuro; Shibata, Hirofumi; Aragaki, Naokatsu; Higuchi, Tomihiko; Hashimoto, Toshihiro (2008). «Novel Abietane Diterpenoids and Aromatic Compounds from Cladonia rangiferina and Their Antimicrobial Activity against Antibiotics Resistant Bacteria». Chemical & Pharmaceutical Bulletin56 (1): 89-92. PMID18175983. doi:10.1248/cpb.56.89.
Nybakken, Line; Julkunen-Tiitto, Riitta (2006). «UV-B induces usnic acid in reindeer lichens». The Lichenologist38 (5): 477-85. doi:10.1017/S0024282906005883.
Bjerke, Jarle W.; Lerfall, Kjetil; Elvebakk, Arve (2002). «Effects of ultraviolet radiation and PAR on the content of usnic and divaricatic acids in two arctic-alpine lichens». Photochemical & Photobiological Sciences1 (9): 678-85. PMID12665305. doi:10.1039/b203399b.
Bjerke, J; Elvebakk, A; Dominguez, E; Dahlback, A (2005). «Seasonal trends in usnic acid concentrations of Arctic, alpine and Patagonian populations of the lichen». Phytochemistry66 (3): 337-44. PMID15680990. doi:10.1016/j.phytochem.2004.12.007.
nih.gov
ncbi.nlm.nih.gov
Yoshikawa, Kazuko; Kokudo, Naoki; Tanaka, Masami; Nakano, Tatsuro; Shibata, Hirofumi; Aragaki, Naokatsu; Higuchi, Tomihiko; Hashimoto, Toshihiro (2008). «Novel Abietane Diterpenoids and Aromatic Compounds from Cladonia rangiferina and Their Antimicrobial Activity against Antibiotics Resistant Bacteria». Chemical & Pharmaceutical Bulletin56 (1): 89-92. PMID18175983. doi:10.1248/cpb.56.89.
Bjerke, Jarle W.; Lerfall, Kjetil; Elvebakk, Arve (2002). «Effects of ultraviolet radiation and PAR on the content of usnic and divaricatic acids in two arctic-alpine lichens». Photochemical & Photobiological Sciences1 (9): 678-85. PMID12665305. doi:10.1039/b203399b.
Bjerke, J; Elvebakk, A; Dominguez, E; Dahlback, A (2005). «Seasonal trends in usnic acid concentrations of Arctic, alpine and Patagonian populations of the lichen». Phytochemistry66 (3): 337-44. PMID15680990. doi:10.1016/j.phytochem.2004.12.007.
