APA (7th ed.) Citation

Ushakov, L. CIS Selected Papers: Photometry. SPIE Digital Library.

Chicago Style (17th ed.) Citation

Ushakov, Leonid. CIS Selected Papers: Photometry. SPIE Digital Library.

MLA (8th ed.) Citation

Ushakov, Leonid. CIS Selected Papers: Photometry. SPIE Digital Library.

Warning: These citations may not always be 100% accurate.