Foster, Russell; Williams, Robyn (5 de decembro de 2009). "Extra-retinal photo receptors"(Interview). Science Show. ABC Radio National. Consultado o 2010-05-28. ...temos a bagaxe evolutiva de mostrar a estacionalidade pero non estamos totalmente seguros de cal é o mecanismo.
Fankhauser, Christian (2001). "The Phytochromes, a Family of Red/Far-red Absorbing Photoreceptors". Journal of Biological Chemistry276 (15): 11453–11456. ISSN0021-9258. PMID11279228. doi:10.1074/jbc.R100006200.
Casal, J.J. (2014). "Light perception and signalling by phytochrome A". Journal of Experimental Botany. 65 (11). (11): 2835–2845. PMID24220656. doi:10.1093/jxb/ert379.
Fankhauser, Christian (2001). "The Phytochromes, a Family of Red/Far-red Absorbing Photoreceptors". Journal of Biological Chemistry276 (15): 11453–11456. ISSN0021-9258. PMID11279228. doi:10.1074/jbc.R100006200.
Casal, J.J. (2014). "Light perception and signalling by phytochrome A". Journal of Experimental Botany. 65 (11). (11): 2835–2845. PMID24220656. doi:10.1093/jxb/ert379.
Purcell, Larry C.; Salmeron, Montserrat; Ashlock, Lanny (2014). "Chapter 2". Arkansas Soybean Production Handbook - MP197. Little Rock, AR: University of Arkansas Cooperative Extension Service. pp. 5–7. Arquivado dende o orixinal(PDF) o 04 de marzo de 2016. Consultado o 21 de febreiro de 2016.
web.archive.org
Purcell, Larry C.; Salmeron, Montserrat; Ashlock, Lanny (2014). "Chapter 2". Arkansas Soybean Production Handbook - MP197. Little Rock, AR: University of Arkansas Cooperative Extension Service. pp. 5–7. Arquivado dende o orixinal(PDF) o 04 de marzo de 2016. Consultado o 21 de febreiro de 2016.
worldcat.org
Fankhauser, Christian (2001). "The Phytochromes, a Family of Red/Far-red Absorbing Photoreceptors". Journal of Biological Chemistry276 (15): 11453–11456. ISSN0021-9258. PMID11279228. doi:10.1074/jbc.R100006200.