Maksymenko, Oleksander     Portable optical-digital speckle correlator for non-destructive control of constructional elements [Текст] / Oleksander Maksymenko, Leonid Muravsky, Oleksander Sakharuk // Topical meeting on optoinformatics : Proceedings, Sept. 15-18, 2008, St. Petersburg, Russia / St. Petersburg State Univ. for Inform. Technologies, Mech. and Optics. — St. Petersburg, 2008. — P. 105-108.