It's easy to find Ramanujan's proof of Ramanujan's Ramanujan primes:

www.imsc.res.in/~rao/ramanujan/CamUnivCpapers/Cpaper24/page1.htm

Ramanujan's Proof

Wikipedia mentions that Paul Erdos Erdős also had a proof:

en.wikipedia.org/wiki/Bertrand%27s_Postulate?#Erd.C5.91s.27s_theorems

Wikipedia article on Bertrand's Postulate

Does anyone know the full citation for Erdos's Erdős's proof that for any number n, $n$, there exists a prime p $p$ such that for all $x >= p\ge p$, there are n $n$ primes between x $x$ and 2x?$2x$?

Thanks very much,

-Larry

It's easy to find Ramanujan's proof of Ramanujan's primes:

www.imsc.res.in/~rao/ramanujan/CamUnivCpapers/Cpaper24/page1.htm

Wikipedia mentions that Paul Erdos also had a proof:

en.wikipedia.org/wiki/Bertrand%27s_Postulate?#Erd.C5.91s.27s_theorems

Does anyone know the full citation for Erdos's proof that for any number n, there exists a prime p such that for all x >= p, there are n primes between x and 2x?

Thanks very much,

-Larry