@article{CoppalleRaveMoranetal.2021,
  author    = {Sullivan Coppalle and Guillaume Rav{\´e} and Jason Moran and Iyed Salhi and Abderraouf Ben Abderrahman and Sghaeir Zouita and Urs Granacher and Hassane Zouhal},
  title     = {Internal and External Training Load in Under-19 versus Professional Soccer Players during the In-Season Period},
  journal   = {International Journal of Environmental Research and Public Health},
  volume    = {18},
  number    = {2},
  doi       = {10.3390/ijerph18020558},
  year      = {2021},
}