Leporati, Stephen C.; Pecl, Gretta T.; Semmens, Jayson M. (2008-09-01). "Reproductive status of Octopus pallidus, and its relationship to age and size". Marine Biology. 155 (4): 375–385. doi:10.1007/s00227-008-1033-9. ISSN1432-1793.
Doubleday, Zoë; Semmens, Jayson M.; Pecl, Gretta; Jackson, George (2006-10-24). "Assessing the validity of stylets as ageing tools in Octopus pallidus". Journal of Experimental Marine Biology and Ecology. 338 (1): 35–42. doi:10.1016/j.jembe.2006.06.027. ISSN0022-0981.
Doubleday, Zoë A.; Semmens, Jayson M. (2011-01-31). "Quantification of the age-pigment lipofuscin in known-age octopus (Octopus pallidus): A potential tool for age determination". Journal of Experimental Marine Biology and Ecology. 397 (1): 8–12. doi:10.1016/j.jembe.2010.11.010. ISSN0022-0981.
Leporati, Stephen C.; Pecl, Gretta T.; Semmens, Jayson M. (2008-09-01). "Reproductive status of Octopus pallidus, and its relationship to age and size". Marine Biology. 155 (4): 375–385. doi:10.1007/s00227-008-1033-9. ISSN1432-1793.
Doubleday, Zoë; Semmens, Jayson M.; Pecl, Gretta; Jackson, George (2006-10-24). "Assessing the validity of stylets as ageing tools in Octopus pallidus". Journal of Experimental Marine Biology and Ecology. 338 (1): 35–42. doi:10.1016/j.jembe.2006.06.027. ISSN0022-0981.
Doubleday, Zoë A.; Semmens, Jayson M. (2011-01-31). "Quantification of the age-pigment lipofuscin in known-age octopus (Octopus pallidus): A potential tool for age determination". Journal of Experimental Marine Biology and Ecology. 397 (1): 8–12. doi:10.1016/j.jembe.2010.11.010. ISSN0022-0981.