1. Biewirth, P.N., 1982. Experimental welding of volcanic ash. MSc thesis, Monash University.
2. Some experiments and calculations relating to the origin of welded tuffs;Boyd;Trans. Am. Geophys. Union,1951
3. The Bad Step Tuff: a lava-like rheomorphic ignimbrite in a calc-alkaline piecemeal caldera, English Lake District;Branney;Bull. Volcanol.,1992
4. Redox viscometry of some iron-bearing silicate liquids;Dingwell;Am. Mineral.,1991
5. Volcanic dilemma: flow or blow?;Dingwell;Science,1996