Farion-Demaret, Muriel; and Smith, Thierry (2002). «Fruits and seeds from the Tienen Formation at Dormaal, Palaeocene–Eocene transition in eastern Belgium». Review of Palaeobotany and Palynology. 122 (1–2): 47–62. doi:10.1016/S0034-6667(02)00103-3A referência emprega parâmetros obsoletos |coautor= (ajuda)