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Complete lists of elliptic curves defined over $\Q$ for a given conductor $N$ were computed by John Cremona using the modular symbols method described in [Cremon97, MR:1628193] , as implemented in his eclib package [10.5281/zenodo.29671] .

The additional data for each curve and isogeny class was also computed by John Cremona using eclib or Sage unless otherwise specified.