Fischer, R. Current Developments in Lens Design and Optical Systems Engineering. SPIE Digital Library.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFischer, Robert. Current Developments in Lens Design and Optical Systems Engineering. SPIE Digital Library.
एमएलए (9वां संस्करण) प्रशस्ति पत्रFischer, Robert. Current Developments in Lens Design and Optical Systems Engineering. SPIE Digital Library.
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