A lichenological comparison of the Paros and Santorini island groups (Aegean, Greece), with annotated checklistHarrie J. M. Sipman, Thomas Raus|Willdenowia - Annals of the Botanic Garden and Botanical Museum Berlin-Dahlem|1999Cited by 24
An inventory of the lichen flora of Kalimnos and parts of Kos (Dodecanisos, Greece)Harrie J. M. Sipman, Thomas Raus|Willdenowia - Annals of the Botanic Garden and Botanical Museum Berlin-Dahlem|2002Cited by 23