Andreuccetti, P. & Iodice, M. & Prisco, M. & Gualtieri, R. (1999)
Intercellular bridges between granulosa cells and the oocyte in the elasmobranch Raya asterias.
The Anatomical Record, 255(2), 180–187 DOI: 10.1002/(SICI)1097-0185(19990601)255:2<180::AID-AR8>3.0.CO;2-S