@article{MZ_1979__167_172835,
     author = {Charles J.K. Batty},
     title = {Relative {Commutants} in {Compact} {Convex} {Sets} and {Banach} {Spaces.}},
     journal = {Mathematische Zeitschrift},
     pages = {25--36},
     publisher = {mathdoc},
     volume = {167},
     year = {1979},
     zbl = {0386.46053},
     url = {http://geodesic.mathdoc.fr/item/MZ_1979__167_172835/}
}