@ARTICLE {29415,
author={W.  Onetti-Onetti and J.  Chinchilla-Minguet and F. Martins and A.  Castillo-Rodriguez},
doi={10.3389/fpsyg.2019.01333},
journal={Frontiers in Psychology},
title={Self-Concept and Physical Activity: Differences Between High School and University Students in Spain and Portugal},
year={2019},
month={June},
volume={10},
number={1333},
pages={1-8},
ISSN={}
}