P. J. Ortoleva, P., Y. Chen and W. Chen. Agates, geodes, concretions and orbicules: Self-organized zoning and morphology. In Fractals and dynamic systems in geoscience, edited by Jörn H. Kruhl, 283-305. New York: Springer-Verlag (1994).
P. J. Ortoleva, P., Y. Chen and W. Chen. Agates, geodes, concretions and orbicules: Self-organized zoning and morphology. In Fractals and dynamic systems in geoscience, edited by Jörn H. Kruhl, 283-305. New York: Springer-Verlag (1994).