@article{PORMA_1976__35_1_115275,
     author = {Guerin, E.E. and Buschman, R.G.},
     title = {Elementary proofs of statements equivalent to the prime number theorem},
     journal = {Portugaliae mathematica},
     pages = {41--59},
     publisher = {mathdoc},
     volume = {35},
     number = {1},
     year = {1976},
     mrnumber = {0429713},
     zbl = {0382.10028},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1976__35_1_115275/}
}