@article{701055,
     title = {An example of J. W. Roberts of a convex compact subset in a linear metric space with no extreme points},
     booktitle = {Abstracta. 4th Winter School on Abstract Analysis},
     series = {GDML\_Books},
     publisher = {Czechoslovak Academy of Sciences},
     address = {Praha},
     year = {1976},
     pages = {121-121},
     url = {http://dml.mathdoc.fr/item/701055}
}

Mankiewicz, P. An example of J. W. Roberts of a convex compact subset in a linear metric space with no extreme points, dans Abstracta. 4th Winter School on Abstract Analysis, GDML_Books,  (1976), p. 121. http://gdmltest.u-ga.fr/item/701055/