@article{article0ecceeac,
title   = {An Acoustic Examination of Pitch Variation in Soprano Singing},
author = {Souza, Glaucia Verena Sampaio de and Duarte, Joao Marcos Trindade and Viegas, Flavia and Zenari, Marcia Simões and Nemr, Katia},
year = {2020},
doi = {10.1016/j.jvoice.2018.12.007},
journal   = {Journal of voice}
}