@article{BUMI_2003_8_6B_3_a5,
     author = {Murat, Fran\c{c}ois and Trombetti, Cristina},
     title = {A chain rule formula for the composition of a vector-valued function by a piecewise smooth function},
     journal = {Bollettino della Unione matematica italiana},
     pages = {581--595},
     publisher = {mathdoc},
     volume = {Ser. 8, 6B},
     number = {3},
     year = {2003},
     zbl = {1179.46037},
     mrnumber = {969514},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BUMI_2003_8_6B_3_a5/}
}