McClay, David R.; Fink, Rachael D (1982). "Sea Urchin Hyalin: Appearance and Function in Development". Developmental Biology. 92 (2): 285–293. doi:10.1016/0012-1606(82)90175-0. PMID6180943.
Schuel, Herbert (1984). "The Prevention of Polyspermic Fertilization in Sea Urchins". Biological Bulletin. 167 (2): 271–309. doi:10.2307/1541277. JSTOR1541277. PMID29320238.
Schuel, Herbert (1984). "The Prevention of Polyspermic Fertilization in Sea Urchins". Biological Bulletin. 167 (2): 271–309. doi:10.2307/1541277. JSTOR1541277. PMID29320238.
McClay, David R.; Fink, Rachael D (1982). "Sea Urchin Hyalin: Appearance and Function in Development". Developmental Biology. 92 (2): 285–293. doi:10.1016/0012-1606(82)90175-0. PMID6180943.
Schuel, Herbert (1984). "The Prevention of Polyspermic Fertilization in Sea Urchins". Biological Bulletin. 167 (2): 271–309. doi:10.2307/1541277. JSTOR1541277. PMID29320238.