Natural hybridization in the sea urchin genus between species without apparent barriers to gamete recognitionDOI: info:10.1111/j.1558-5646.2012.01609.xv. 66No. 61695–1708
Zigler, Kirk S., Byrne, Maria, Raff, Elizabeth C., Lessios, Harilaos A., and Raff, Rudolph A. 2012. "Natural hybridization in the sea urchin genus Pseudoboletia between species without apparent barriers to gamete recognition." Evolution, 66, (6) 1695–1708. https://doi.org/10.1111/j.1558-5646.2012.01609.x.