@misc{misc50ddfe34,
title   = {Diurnal variation in behavioral correlates of sleepiness: yawning, stretching and rubbing the eyes},
author = {Andrade, M M M and Benedito-Silva, Ana Amélia and Menna Barreto, Luiz Silveira},
year = {1995},
booktitle   = {World Conference on Chronobiology and Chronotherapeutics}
}