@inproceedings{inproceedings44047f8a,
title   = {Roles being played: an analysis of early peer interaction},
author = {Oliveira, Zilma de Moraes Ramos de and Rossetti-Ferreira, Maria Clotilde T.},
year = {1989},
publisher = {International Society for Study of Behavioural Development},
booktitle   = {Biennial Meetings of Issbd}
}