Jaczewski T., Wróblewski A., 1976: Heteroptera: Hebridae, Mesoveliidae, Hydrometridae, Veliidae, Gerridae. Klucze owadów Polski XVIII(4). 32 pp.
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6368
Junzhi C., Ming B., Hong W., Liqiang J., 2007: Catalogue of the insect type specimens deposited in China. Vol. 1. 792 pp. (in Chinese, scientific names in Latin). Discount 30%!