Lichen mapping in Switzerland: the epiphytic lichens of the Plateau and the Prealps
Clerc P & Scheidegger C
Clerc, P., & Scheidegger, C. (1990). Lichen mapping in Switzerland: the epiphytic lichens of the Plateau and the Prealps. Stuttgarter Beiträge zur Naturkunde A: Biologie, 456, 73-77.