@article{10_4064_cm_10_1_133_135,
     author = {Wac{\l}aw Sierpi\'nski},
     title = {Sur les nombres compos\'es de la forme $a^{2^{n}}+1$},
     journal = {Colloquium Mathematicum},
     pages = {133--135},
     publisher = {mathdoc},
     volume = {10},
     number = {1},
     year = {1963},
     doi = {10.4064/cm-10-1-133-135},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-10-1-133-135/}
}