BibTex format
@article{van:2005:10.1364/OPEX.13.009085,
author = {van, Duinen G and van, Heel M and Patwardhan, A},
doi = {10.1364/OPEX.13.009085},
journal = {OPTICS EXPRESS},
pages = {9085--9093},
title = {Magnification variations due to illumination curvature and object defocus in transmission electron microscopy},
url = {http://dx.doi.org/10.1364/OPEX.13.009085},
volume = {13},
year = {2005}
}