1. Adams KJ. 2019. Changes in the status and distribution of the Red Data mossZygodon forsteriin Epping Forest based on mapping in 2003/4, 2008 and 2018/19. Unpublished report to the City of London Corporation.
2. Averis ABG. 1998.Herbertus borealismonitoring at Beinn Eighe, Wester Ross, 1998. Unpublished report to Scottish Natural Heritage.
3. Averis ABG, Hodgetts NG. 2013. Survey of oceanic bryophytes associated with watercourses in Sunart Special Area of Conservation. Unpublished report to Scottish Natural Heritage.