C. Mueller, and R. Sowers. Stochastic analysis (Ithaca, NY, 1993), volume 57 of Proc. Sympos. Pure Math., Amer. Math. Soc., Providence, RI, Finally, T. Shiga has pointed out that there is a dual process for (1.4),
which is a system of branching Brownian motions, in which particles
coalesce at a Poisson rate, measured according to the local time beween
pairs of particles. We do not give a more precise description..(1995)
D. Mollison. Proceedings of the Sixth Berkeley Symposium on Mathematical Statistics and Probability (Univ. California, Berkeley, Calif., 1970/1971), Vol. III: Probability theory, page 579--614. Berkeley, Calif., Univ. California Press, (1972)