Biström, O., Franciscolo, M. and 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), p. 52. doi: 10.33338/ef.83535.