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Tilney, L. (December 1968). "Studies on the microtubules in heliozoa. IV. The effect of colchicine on the formation and maintenance of the axopodia and the redevelopment of pattern in Actinosphaerium nucleofilum (Barrett)". Journal of Cell Science. 3 (4): 549–62. doi:10.1242/jcs.3.4.549. PMID5707852.
Suzaki, T.; Shigenaka, Y.; Watanabe, S.; Toyohara, A. (1980). "Food capture and ingestion in the large heliozoan, Echinosphaerium nucleofilum". Journal of Cell Science. 42: 61–79. doi:10.1242/jcs.42.1.61. ISSN0021-9533. PMID7400244.