@article{article05fa5571,
title   = {What are we measuring with the morningness–eveningness questionnaire? Exploratory factor analysis across four samples from two countries},
author = {Panjeh, Sareh and Pompéia, Sabine and Archer, Simon N. and Pedrazzoli Neto, Mário and Schantz, Malcolm von and Cogo-Moreira, Hugo},
year = {2020},
doi = {10.1080/07420528.2020.1815758},
journal   = {Chronobiology International}
}