@article{SMJ2_2004_30_4_a5,
     author = {Argyros, Spiros and Arvanitakis, Alexander},
     title = {Regular {Averaging} and {Regular} {Extension} {Operators} in {Weakly} {Compact} {Subsets} of {Hilbert} {Spaces}},
     journal = {Serdica Mathematical Journal},
     pages = {527--548},
     publisher = {mathdoc},
     volume = {30},
     number = {4},
     year = {2004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SMJ2_2004_30_4_a5/}
}