1. Light Scattering by Small Particles;Van de Hulst,1957
2. Optical measurement of water droplets in wet steam flows;Walters;Conf. Proc. Inst. Mech. Engrs London,1973
3. J. Wachter and Wang Nai-ning. An optical probe for measuring the moisture and droplet size of wet steam in turbine, particulate Laden flow in turbomachinery. In: Conf. Publ. ASME, St Louis, June, 1982.
4. An improvement development for the particle size measurement based upon total scattering technique (in Chinese);Nai-ning;J. Shanghai Inst. Mech. Eng.,1987
5. On the numerical solution of Fredholm integral equations of the first kind by the inversion of the linear system produced by quadrature;Twomey;J. Ass. Comput. Mach.,1963