@article{NSJOM_2008_38_2a_9,
     author = {A. Tekcan and A. \"Ozkoc and B. Gezer and O. Bizim},
     title = {Elliptic curves, conics and cubic congruences associated with

 indefinite binary quadratic forms},
     journal = {Novi Sad Journal of Mathematics},
     pages = {071-081},
     publisher = {mathdoc},
     volume = {38},
     number = {2},
     year = {2008},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_2008_38_2a_9/}
}