@article{10_4064_fm_159_3_219_229,
     author = {Hans Volkmer},
     title = {Extending {Peano} derivatives: necessary and sufficient conditions},
     journal = {Fundamenta Mathematicae},
     pages = {219--229},
     publisher = {mathdoc},
     volume = {159},
     number = {3},
     year = {1999},
     doi = {10.4064/fm-159-3-219-229},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-159-3-219-229/}
}