@article{AM2_1978__18_136779,
     author = {Guido Claessens},
     title = {Bigradients, {Hankel} determinants and the {Newton-Pad\'e} table. {(Short} {Communication).}},
     journal = {Aequationes mathematicae},
     pages = {259--259},
     publisher = {mathdoc},
     volume = {18},
     year = {1978},
     url = {http://geodesic.mathdoc.fr/item/AM2_1978__18_136779/}
}