Biström, O., Franciscolo, M., & Sanfilippo, N. (1991). <i>Yolina tiwaiensis</i> Franciscolo & Sanfilippo, 1990, junior synonym of <i>Yolina libera</i> Biström, 1987 (Coleoptera, Dytiscidae). Entomologica Fennica, 2(2), 52. https://doi.org/10.33338/ef.83535