Daniela Schäfer, Gard Filip Gjerdalen, Erik Ekker Solberg, Maria Khokhlova, Victoria Badtieva, David Herzig, Lukas Daniel Trachsel, Patrik Noack, Laura Karavirta, Prisca Eser, Hugo Saner, Matthias Wilhelm,
Sex differences in heart rate variability: a longitudinal study in international elite cross-country skiers European Journal of Applied Physiology. ,vol. 115, pp. 2107- 2114 ,(2015) ,
10.1007/S00421-015-3190-0