@article{MAN_1935__110_159714,
     author = {A. Razmadz\'e},
     title = {Sur les solutions p\'eriodiques et les extr\'emales ferm\'ees du calcul des variations},
     journal = {Mathematische Annalen},
     pages = {63--96},
     publisher = {mathdoc},
     volume = {110},
     year = {1935},
     zbl = {60.0457.03},
     url = {http://geodesic.mathdoc.fr/item/MAN_1935__110_159714/}
}