BibTex format
@article{Shi:2006:10.1109/lsp.2006.879467,
author = {Shi, X and Ribeiro, Castro AL and Manduchi, R and Montgomery, R},
doi = {10.1109/lsp.2006.879467},
journal = {IEEE Signal Processing Letters},
pages = {684--687},
title = {Rotational Invariant Operators Based on Steerable Filter Banks},
url = {http://dx.doi.org/10.1109/lsp.2006.879467},
volume = {13},
year = {2006}
}