1. Three abietaceous cones from the Wealden of Belgium;Alvin;Mémoires de l'Institut Royal des Sciences Naturelles de Belgique,1953
2. On the two cones Pseudoaraucaria Heeri (Coemans) Nov. Comb. and Pityostrobus villerotensis Nov. Sp. from the Wealden of Belgium;Alvin;Mémoires de l'Institut Royal des Sciences Naturelles de Belgique,1957
3. Further conifers of the Pinaceae from the Wealden Formation of Belgium;Alvin;Mémoires de l'Institut Royal des Sciences Naturelles de Belgique,1960
4. Weichselia reticulata (Stokes et Webb) Fontaine from the Wealden of Belgium;Alvin;Mémoires de l'Institut Royal des Sciences Naturelles de Belgique,1971
5. Leaf anatomy of Weichselia based on fusainized material;Alvin;Palaeontology,1974