P. Bruin and F. Najman have determined the exceptional quadratic points on $X_0(33)$.
See Table 8 of https://arxiv.org/pdf/1406.0655.pdf
P. Bruin and F. Najman have determined the exceptional quadratic points on $X_0(33)$.
See Table 8 of https://arxiv.org/pdf/1406.0655.pdf