@article{701085,
     title = {Extreme contractions on C(X) and $L^1(\mu )$
               },
     booktitle = {Abstracta. 5th Winter School on Abstract Analysis},
     series = {GDML\_Books},
     publisher = {Czechoslovak Academy of Sciences},
     address = {Praha},
     year = {1977},
     pages = {33-35},
     url = {http://dml.mathdoc.fr/item/701085}
}

Iwanik, A. Extreme contractions on C(X) and $L^1(\mu )$
               , dans Abstracta. 5th Winter School on Abstract Analysis, GDML_Books,  (1977), pp. 33-35. http://gdmltest.u-ga.fr/item/701085/