Azzam, R M A Quarter-wave layers with 50% reflectance for obliquely incident unpolarized light. [electronic resource] - Journal of the Optical Society of America. A, Optics, image science, and vision Mar 2007 - 850-5 p. digital Publication Type: Journal Article ISSN: 1084-7529 Standard No.: 10.1364/josaa.24.000850 doi