@article{JTNB_2002__14_1_257_0,
     author = {Keith Matthews},
     title = {The diophantine equation $ax^2+bxy+cy^2=N$, $D=b^2-4ac>0$},
     journal = {Journal de th\'eorie des nombres de Bordeaux},
     pages = {257--270},
     publisher = {Universit\'e Bordeaux I},
     volume = {14},
     number = {1},
     year = {2002},
     zbl = {1018.11013},
     mrnumber = {1926002},
     language = {en},
     url = {https://jtnb.centre-mersenne.org/item/JTNB_2002__14_1_257_0/}
}