1. Astrova, G.G. 1965. Morphologiâ, istoriâ razvitiâ i sistema ordovikskih i siluriiskih mšanok [Morphology, history of development, and System of the Ordovician and Silurian Bryozoal. — Trudy Paleontologičeskogo Instituta Akademü Nauk SSSR 106: 1–432.
2. Astrova, G.G. 1978. Istoriâ razvitiâ, sistema i filogeniâ mšanok. Otrâd Trepostomata [The history of development, System, and phylogeny of the Bryozoa. Order Trepostomata]. — Trudy Paleontologičeskogo Instituta Akademü Nauk SSSR169: 1–240.
3. Astrova, G.G. &Morozova, I.P. 1956. K sistematike mšanok otrâda Cryptostomata [On systematics of the order Cryptostomata]. — Doklady Akademü Nauk SSSR [Reports of the Academy of Sciences of USSR]110 (4): 661–664.
4. Bassler, R.S. 1929. The Permian Bryozoa of Timor. — Paläontologie von Timor. Lieferung 16, Abhandlung28: 37–90.
5. Beauchamp, B.;Harrison, J.C. &Henderson, C.M. 1989. Upper Paleozoic stratigraphy and basin analysis of the Sverdrup Basin, Canadian Arctic Archipelago: Part 1, time frame and tectonic evolution. — Current Research, Part G, Geological Survey of Canada, Paper89-16: 105–113.