Question about citing the gmp library

[Jorge Cardoso Leitao]

Hi there.

I'm currently using this library for a scientific project, and naturally I would like to cite it. In your site, I didn't find any citation reference which I could use to cite you.

Can you please refer how should I cite your library?
I would suggest, according to this e-mail, that you could provide a "citation" somewhere, so people could use it. 

Thank you for your time,
Jorge