1. Investigation of stresses in a rectangular bar by means of polarised light;FILON;Phil. Mag.,1912
2. Photoelastic investigation of shear and bending stresses in centrally loaded simple beams. M. M. FROCHT, Carnegie Inst. Tech., Engg. Bull., 1937.
3. The place of photoelasticity in the analysis of statically indeterminate structures. M. M. FROCHT, ibid., 1938.
4. Photoelastic analysis of a prestressed beam;ANDEREGG;Proc. ASTM,1939
5. The measurement of stress in plates subjected to transverse flexure by the photoelastic method. G. H. LEE, Proc. 13th Semi-An. East. Py. Conf., 1941.