Null shifting with fixed delays.

MLA

Berry, Mark H., and Debra M. Gookin. “Null Shifting with Fixed Delays.” Proceedings of SPIE, no. 1, Nov. 1990, pp. 262–66. EBSCOhost, https://doi.org/10.1117/12.18165.

APA

Berry, M. H., & Gookin, D. M. (1990). Null shifting with fixed delays. Proceedings of SPIE, 1, 262–266. https://doi.org/10.1117/12.18165

Chicago

Berry, Mark H., and Debra M. Gookin. 1990. “Null Shifting with Fixed Delays.” Proceedings of SPIE, no. 1 (November): 262–66. doi:10.1117/12.18165.