(en) Laura Y. Fox-Clipsham, Stuart D. Carter, Ian Goodhead, Neil Hall, Derek C. Knottenbelt, Paul D. F. May, William E. Ollier et June E. Swinburne, « Identification of a Mutation Associated with Fatal Foal Immunodeficiency Syndrome in the Fell and Dales Pony », PLOS genetics, (DOI10.1371/journal.pgen.100213, lire en ligne).
(en) Laura Y. Fox-Clipsham, Stuart D. Carter, Ian Goodhead, Neil Hall, Derek C. Knottenbelt, Paul D. F. May, William E. Ollier et June E. Swinburne, « Identification of a Mutation Associated with Fatal Foal Immunodeficiency Syndrome in the Fell and Dales Pony », PLOS genetics, (DOI10.1371/journal.pgen.100213, lire en ligne).