Duarte Valério, José Sá da Costa. Variable-order fractional derivatives and their numerical approximations. Signal Processing, 91(3):470-483, 2011. [doi]
@article{ValerioC11,
title = {Variable-order fractional derivatives and their numerical approximations},
author = {Duarte Valério and José Sá da Costa},
year = {2011},
doi = {10.1016/j.sigpro.2010.04.006},
url = {http://dx.doi.org/10.1016/j.sigpro.2010.04.006},
researchr = {https://researchr.org/publication/ValerioC11},
cites = {0},
citedby = {0},
journal = {Signal Processing},
volume = {91},
number = {3},
pages = {470-483},
}