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This article discusses Lagrangian Poisson distribution (LPD) models, competing Poisson processes, and mixtures of Poisson with nonrandom processes. Biological systems appropriate for LPD treatment are common. The authors analyze cases of arthropod distribution among cover items, weevil oviposition, sperm penetration of eggs, and chromosome breakage and repair.
Janardan et al. (Mon,) studied this question.