1. The constitution of asphalt;Nellenstyen;J Inst Petrol Technol,1924
2. Collid chemistry of asphalts;Mack;J Phys Chem,1932
3. Asphaltic bitumen as colloidal system;Pfeiffer;J Phys Chem,1940
4. Constitution of asphaltic bitumens;Labout,1950
5. Rheological properties of asphalts;Saal,1958