1. Optical techniques for fluid flow;Barnes;J. SMPTE,1953
2. “Experimental Fluid Mechanics,”;Bradshaw,1970
3. Flow visualization in water: A review of techniques;Clayton;J. Sci. Instrum.,1967
4. Optical methods in heat transfer;Hauf;Advan. Heat Transfer,1970
5. “Schlieren Methods,”;Holder,1963