VALIGUROVÁ, Andrea, Břetislav KOUDELA, Lada HOFMANNOVÁ and Jiří VÁVRA. An Ultrastructural Comparison of the Attachment Sites Between Gregarina steini and Cryptosporidium muris.
The Journal of Eukaryotic Microbiology. 2007, vol. 54, No 6, p. 495-510. ISSN 1802-128X.