@article{NAM_1915_4_15__64_1,
     author = {Alezais, R.},
     title = {Sur les progressions arithm\'etiques dispos\'ees en escalier},
     journal = {Nouvelles annales de math\'ematiques : journal des candidats aux \'ecoles polytechnique et normale},
     pages = {64--70},
     publisher = {Carilian-Goeury et Vor Dalmont},
     volume = {4e s{\'e}rie, 15},
     year = {1915},
     language = {fr},
     url = {http://archive.numdam.org/item/NAM_1915_4_15__64_1/}
}