Elferink, M. G., Vallée, A. A., Jungerius, A. P., Crooijmans, R. P., & Groenen, M. A. (2008). Partial duplication of the PRLR and SPEF2 genes at the late feathering locus in chicken. BioMed Central.

Elferink, Martin G., Amélie AA Vallée, Annemieke P. Jungerius, Richard PMA Crooijmans, ja Martien AM Groenen. Partial Duplication of the PRLR and SPEF2 Genes At the Late Feathering Locus in Chicken. BioMed Central, 2008.

Elferink, Martin G., et al. Partial Duplication of the PRLR and SPEF2 Genes At the Late Feathering Locus in Chicken. BioMed Central, 2008.