@article{articleb13d664a,
title   = {The near-infrared Na'iota'doublet feature in M stars},
author = {Schiavon, Ricardo Piorno and Barbuy, Beatriz Leonor Silveira and Rossi, Silvia Cristina Fernandes and Milone, André de Castro},
year = {1997},
journal   = {Astrophysical Journal}
}