@article{ELMA_1974__29_141134,
     author = {Joseph Zaks},
     title = {Non-Hamiltonian {Square-minus-two.}},
     journal = {Elemente der Mathematik},
     pages = {33--35},
     publisher = {mathdoc},
     volume = {29},
     year = {1974},
     zbl = {0281.05109},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1974__29_141134/}
}