Planula (Norwegian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Planula" in Norwegian language version.

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9^th place

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6^th place

42^nd place

archive.org (Global: 6^th place; Norwegian: 42^nd place)

Ruppert, E.E., Fox, R.S., and Barnes, R.D. (2004). «Nemertea». Invertebrate Zoology (7 utg.). Brooks / Cole. s. 271–274. ISBN 0-03-025982-7.

Nielsen, Claus (3. mars 2008). «Six major steps in animal evolution: are we derived sponge larvae?». Evolution & Development. 10 (2): 241–257. doi:10.1111/j.1525-142X.2008.00231.x. Besøkt 29. november 2014.
Nakanishi, Nagayasu; Yuan, David; Jacobs, David K.; Hartenstein, Volker (2008). «Early development, pattern, and reorganization of the planula nervous system in Aurelia (Cnidaria, Scyphozoa)». Development Genes and Evolution. 218 (10): 511–524. doi:10.1007/s00427-008-0239-7.

Nielsen, Claus (3. mars 2008). «Six major steps in animal evolution: are we derived sponge larvae?». Evolution & Development. 10 (2): 241–257. doi:10.1111/j.1525-142X.2008.00231.x. Besøkt 29. november 2014.