1. Aguinaldo, A.M., Turbeville, J.M., Linford, L.S., et al., Evidence for a clad of nematodes, arthropods and other moulting animals, Nature, 1997, vol. 387, no. 6632, pp. 482–493.
2. Beklemishev, V.N., Osnovy sravnitel’noi anatomii bespozvonochnykh (Fundamentals of Comparative Anatomy of Invertebrates), Moscow, 1944.
3. Bright, M., Eichinger, I., and von Salvini-Plawen, L., The metamorphose of a deep-sea hydrothermal vent vestimentiferan (Polychaeta: Sibodlinidae), Organ. Divers. Evol., 2013, vol. 13, no. 2, pp. 163–188.
4. Halanych, K.M., The new view of animal phylogeny, Annu. Rev. Ecol. Syst., 2004, vol. 35, pp. 229–256.
5. Ivanov, A.V., Pogonofory, Fauna SSSR, Novaya Seriya (Fauna of the USSR, New Series: Pogonophores), Moscow–Leningrad, 1960.