Kari Heliovaara, Rauno Vaisanen, The Biogeographical Mystery of the Alternate-Year Populations of Aradus cinnamomeus (Heteroptera, Aradidae), Journal of Biogeography, Vol. 11, No. 6 (Nov., 1984), pp. 491-499
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Heliövaara et al. (1984) studied this question.
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