@article{NAM_1907_4_7__170_0,
     author = {Bricard, R.},
     title = {Vari\'et\'es. {Association} scientifique internationale esp\'erantiste},
     journal = {Nouvelles annales de math\'ematiques : journal des candidats aux \'ecoles polytechnique et normale},
     pages = {170--173},
     publisher = {Carilian-Goeury et Vor Dalmont},
     volume = {4e s{\'e}rie, 7},
     year = {1907},
     language = {fr},
     url = {http://www.numdam.org/item/NAM_1907_4_7__170_0/}
}