@article{10_21136_MB_1994_126113,
     author = {Fejzi\'c, Hajrudin and Ma\v{r}{\'\i}k, Jan and Weil, Clifford E.},
     title = {Extending {Peano} derivatives},
     journal = {Mathematica Bohemica},
     pages = {387--406},
     publisher = {mathdoc},
     volume = {119},
     number = {4},
     year = {1994},
     doi = {10.21136/MB.1994.126113},
     mrnumber = {1316592},
     zbl = {0824.26003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/MB.1994.126113/}
}