@article{JTNB_1994__6_2_421_0,
     author = {Mollin, R. A. and Van der Poorten, A. J. and Williams, H. C.},
     title = {Halfway to a solution of $X^2 - DY^2 = -3$},
     journal = {Journal de th\'eorie des nombres de Bordeaux},
     pages = {421--457},
     publisher = {Universit\'e Bordeaux I},
     volume = {6},
     number = {2},
     year = {1994},
     mrnumber = {1360654},
     zbl = {0820.11015},
     language = {en},
     url = {http://www.numdam.org/item/JTNB_1994__6_2_421_0/}
}