Assessment of an old stratotype: the Frasnian/Famennian boundary at Senzeilles, Southern Belgium.
1995. Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Sciences de la Terre 65; pp. 5-34, 3 fig. 9 plts. with palynomorphs and conodonts. Orig. extract, stapled, very good, 4to.