Palaeonenvironmental implications of plant, insect and other organic-walled microfossils in the Weald Clay Formation (Lower Cretaceous) of southeast England.
1998. Cretaceous Research 19; pp. 279-315, 3 fig. 7 plts. Orig. extract, very good.
Beitrag zur Kenntnis der Tertiärflora aus dem Gebiete des Vierwaldstätter Sees.
1914. Mémoires de la Société Paléontologique Suiisse Vol. XL; 84 pp. 4 plts. h.t. Orig. wrps. with libr. stamp, ends of spine a bit worn, contents very good, 4to.