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2. Åberg B. (1984a). “Kritisk analys av dimensioneringsregler för erosionsskyddande filter (Critical analysis of filter criteria).” Jorddammar (Embankment Dams) Seminar 16th and 17th of Nov. 1983. Bulletin No. TRITA‐VBI‐126 Hydr. Lab. Royal Inst. of Tech. Stockholm Sweden 211–219 (in Swedish with English summary).
3. Åberg B. (1984b). “Kohesionslösa jordmaterials portal och permeabilitet (Void ratio and permeability of non‐cohesive granular materials).” Jorddammar (Embankment Dams) Seminar 16th and 17th of Nov. 1983. Bulletin No. TRITA‐VBI‐126 Hydr. Lab. Royal Inst. of Tech. Stockholm Sweden 221–237 (in Swedish with English summary).
4. Åberg B. (1984c). “Filterbildning i sand och grus (Filter formation in sand and gravel).” Jorddammar (Embankment Dams) Seminar 16th and 17th of Nov. 1983. Bulletin No. TRITA‐VBI‐126 Hydr. Lab. Royal Inst. of Tech. Stockholm Sweden 239–255 (in Swedish with English summary).
5. Void Ratio of Noncohesive Soils and Similar Materials