@article{article38375b29,
title   = {Unified asymptotic theory for all partial directed coherence forms},
author = {Baccalá, Luiz Antonio and Brito, C. S. N. and Takahashi, D. Y and Sameshima, Koichi and Baccalá, Luiz Antonio},
year = {2013},
doi = {10.1098/rsta.2012.0158},
journal   = {Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences}
}