@article{QUE_2000_2000_1_a15,
     author = {Neudecker, Heinz},
     title = {Nota sobre la funci\'on matricial de {Haff.}},
     journal = {Q\"uestii\'o},
     pages = {419-424},
     publisher = {mathdoc},
     volume = {24},
     number = {3},
     year = {2000},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/QUE_2000_2000_1_a15/}
}