@article{articlec970a566,
title   = {Ball position during the tennis serve toss performed by junior athletes: comparison between the first and second service},
author = {Xavier, Ana Paula and Ivo, Fabiano Fernandes and Braga Neto, Ludgero and Ervilha, Ulysses Fernandes},
year = {2017},
doi = {10.7752/jpes.2017.01063},
journal   = {Journal of Physical Education and Sport}
}