R. E.  Ogren, ?Predation behaviour of land planarians?, Hydrobiologia, vol. 305, pp. 105-111, 1995.

E. Judith Almeida, Yamada, C. Mikie, and Froehlich, E. Maria, ?Cytogenetic studies of two land-planarian species from Brazil: Geoplana marginata and Issoca rezendei (Tricladida, Terricola)?, Hydrobiologia, vol. 227, pp. 169-173, 1991.

F.  Carbayo and Leal-Zanchet, A. M., ?Two new genera of geoplaninid land planarians (Platyhelminthes : Tricladida : Terricola) of Brazil in the light of cephalic specialisations?, Invertebrate Systematics, vol. 17, pp. 449-468, 2003.