@article{MS2_1986__59_166999,
     author = {Lars Erik Persson},
     title = {Interpolation with a parameter function.},
     journal = {Mathematica Scandinavica},
     pages = {199--222},
     year = {1986},
     volume = {59},
     zbl = {0619.46064},
     url = {http://geodesic.mathdoc.fr/item/MS2_1986__59_166999/}
}