@article{04014798,
title = {The generalization and proof of Bertrand's postulate.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {10},
year = {1987},
pages = {821-824},
doi = {10.1155/S0161171287000917},
zbl = {0625.10005},
language = {en},
url = {http://dml.mathdoc.fr/item/04014798}
}
Giordano, George. The generalization and proof of Bertrand's postulate.. International Journal of Mathematics and Mathematical Sciences, Tome 10 (1987) pp. 821-824. doi : 10.1155/S0161171287000917. http://gdmltest.u-ga.fr/item/04014798/