@article{AM2_1991__42_3_137415,
     author = {Peter R. Massopust},
     title = {Vector-valued fractal interpolation functions and their box dimension.},
     journal = {Aequationes mathematicae},
     pages = {1--22},
     publisher = {mathdoc},
     volume = {42},
     number = {3},
     year = {1991},
     zbl = {0738.28006},
     url = {http://geodesic.mathdoc.fr/item/AM2_1991__42_3_137415/}
}