@conference {sheng2015observation,
	title = {Observation of Einstein{\textquoteright}s Rings and optical gravitational collimation},
	booktitle = {2015 Conference on Lasers and Electro-Optics (CLEO)},
	year = {2015},
	pages = {1{\textendash}2},
	publisher = {IEEE},
	organization = {IEEE},
	author = {Sheng, Chong and Bekenstein, Rivka and Liu, Hiu and Zhu, Shining and Segev, Mordechai}
}
