Foraminifera source request

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Portnaya, E. L. (1983). Новый род палеогеновых Орбитоидов Pileocyclina gen. nov. - A new genus of Paleocene orbitoids Pileocyclina gen. nov. Известия высших учебных заведений. Геология и разведка - News of higher educational institutions. Geology and exploration. 11: 106-109.