University of Washington Press, Seattle. Toonen, R. J., and J. R. Pawlik. Foundations of gragariousness. Yokohama, H. 1990. Yool, A. J., S. M. Grau, M. G. Hadfield, R. A. Jensen, D. A. Markell, and D. E. Morse.
Excess potassium induces larval metamorphosis in four marine invertebrate species.
Young, C. M. 1994. Marine larval ecology gets a meeting of its own. Zajac, R. N. 1991. I. Seasonal variation in population characteristics and reproductive activity.