@article{RCM_2016_50_2_a0,
     author = {V{\'\i}ctor J. Ram{\'\i}rez V. and A new proof of the Unique Factorization of for d = 3 and 7 and 11 and 19 and 43 and 67},
     title = { 163},
     journal = {Revista colombiana de matematicas},
     pages = {139--143},
     publisher = {mathdoc},
     volume = {50},
     number = {2},
     year = {2016},
     url = {http://geodesic.mathdoc.fr/item/RCM_2016_50_2_a0/}
}