http://hpathy.com/homeopathy-papers/treating-hay-fever-successfully-homeopathy/

http://hpathy.com/clinical-cases/ambra-grisea-a-forgotten-remedy/

http://hpathy.com/materia-medica/proving-cynomorium-coccineum-hidden-treasure-wanted-known-created/

Andrews, M. (2013) Bald headed eagle (Haliaeetus leucocephalus) case Similia Vol 25 No 1 p40

Andrews, M. (2009) Ambra grisea – a forgotten remedy Similia Vol 21 No 2 p29