"Catherine VernaPhilippe BraunsteinLEcole des Hautes Etudes en Sciences Sociales (EHESS)2004DOI 10.1017/s0395264900003991
Interview with Verna GillisTaylor and Francis GroupTaylor and Francis Group1989DOI 10.1080/08905768908594274
Natural Hybridization Between Diploid Ficaria Calthifolia and Tetraploid Ficaria Verna Subsp VernaIvana