@article{MAN_1970__189_162059,
     author = {N.V. BAO and A.K. BOY},
     title = {Extreme {Lipschitz} {Functions.}},
     journal = {Mathematische Annalen},
     pages = {26--46},
     publisher = {mathdoc},
     volume = {189},
     year = {1970},
     url = {http://geodesic.mathdoc.fr/item/MAN_1970__189_162059/}
}