@article{AUCMP_1987__28_1_a6,
     author = {Beran, L.},
     title = {On {Bumby's} equation $(x^2 - 2)^2 - 2=2y^2$: a solution via pythagorean triples},
     journal = {Acta Universitatis Carolinae. Mathematica et Physica},
     pages = {39--40},
     publisher = {mathdoc},
     volume = {28},
     number = {1},
     year = {1987},
     mrnumber = {0929265},
     zbl = {0662.10011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUCMP_1987__28_1_a6/}
}