1. The Silurian Strata of the Kullatorp Core.;Wærn;Bull. geol. Instn Univ.,1948
2. Early Ludlow monograptids with Devonian morphological affinities
3. New Silurian graptolites from the Howgill Fells (Northern England);Rickards;Palaeontology,1965
4. Some diplograptids from the British Lower Silurian;Packham;Palaeontology,1962
5. Howe M. P. A. (in prep.). Lower Llandovery graptolites and the base of the Silurian in the Oslo Region.