BibTex format
@article{SMITH:1977:10.1016/0030-4018(77)90087-6,
author = {SMITH, RW},
doi = {10.1016/0030-4018(77)90087-6},
journal = {OPTICS COMMUNICATIONS},
pages = {106--109},
title = {S AND T FORMULAS FOR HOLOGRAPHIC LENS ELEMENTS},
url = {http://dx.doi.org/10.1016/0030-4018(77)90087-6},
volume = {21},
year = {1977}
}