Lau, A. S. (1977). Lytle, John D.; Morrow, Howard E. (eds.). "The Narcissus effect in infrared optical scanning systems". Stray-Light Problems in Optical Systems. Stray Light Problems in Optical Systems. 107: 57. Bibcode:1977SPIE..107...57L. doi:10.1117/12.964596. S2CID122030149.
Lau, A. S. (1977). Lytle, John D.; Morrow, Howard E. (eds.). "The Narcissus effect in infrared optical scanning systems". Stray-Light Problems in Optical Systems. Stray Light Problems in Optical Systems. 107: 57. Bibcode:1977SPIE..107...57L. doi:10.1117/12.964596. S2CID122030149.
Lau, A. S. (1977). Lytle, John D.; Morrow, Howard E. (eds.). "The Narcissus effect in infrared optical scanning systems". Stray-Light Problems in Optical Systems. Stray Light Problems in Optical Systems. 107: 57. Bibcode:1977SPIE..107...57L. doi:10.1117/12.964596. S2CID122030149.