Prasath, T., H. Greven, and J. D’Haese. “EF-Hand Proteins in Onychophorans As Compared to Tardigrades and Other Ecdysozoans”. Journal of Limnology, vol. 72, no. s1, Mar. 2013, p. e5, doi:10.4081/jlimnol.2013.s1.e5.