@article{10_4064_cm_69_1_43_46,
     author = {J. W\'ojcik},
     title = {On systems of composite {Lehmer} numbers with prime indices},
     journal = {Colloquium Mathematicum},
     pages = {43--46},
     publisher = {mathdoc},
     volume = {69},
     number = {1},
     year = {1996},
     doi = {10.4064/cm-69-1-43-46},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-69-1-43-46/}
}