@article{701076,
     title = {Measure theoretic zero sets in infinite dimensional spaces and differentiability of Lipschitz mappings},
     booktitle = {Abstracta. 5th Winter School on Abstract Analysis},
     series = {GDML\_Books},
     publisher = {Czechoslovak Academy of Sciences},
     address = {Praha},
     year = {1977},
     pages = {13-13},
     url = {http://dml.mathdoc.fr/item/701076}
}

Christensen, J. P. R. Measure theoretic zero sets in infinite dimensional spaces and differentiability of Lipschitz mappings, dans Abstracta. 5th Winter School on Abstract Analysis, GDML_Books,  (1977), p. 13. http://gdmltest.u-ga.fr/item/701076/