Citing chfft

[SolidTux]

I used chfft during my thesis. Should I cite this? If so, how exactly?

[chalharu]

Please use it within the scope of the MPL-2.0 license.

[SolidTux]

That's not what I was asking. I did some numerics and generated some data. I don't distribute my code but use the data. I'm looking for something along the lines of this.