@article{Mader2012,
author = {Mader, Charles A. and Martins, Joaquim R. R. A.},
doi = {10.2514/1.J051658},
journal = {AIAA Journal},
month = dec,
number = {12},
pages = {2809--2819},
title = {Derivatives for Time-Spectral Computational Fluid Dynamics Using an Automatic Differentiation Adjoint},
volume = {50},
year = {2012}
}