Limin Zhang Bradbury, P. C., Song, W. B., & Zhang, L. M. (1997). Stomatogenesis during the formation of the tomite of Hyalophysa chattoni (Hymenostomatida : Ciliophora). EUROPEAN JOURNAL OF PROTISTOLOGY, 33(4), 409–419. https://doi.org/10.1016/S0932-4739(97)80052-1