@article{JCA_2013_20_4_JCA_2013_20_4_a7,
     author = {N. N. Hai and P. T. An},
     title = {A {Generalization} of {Blaschke's} {Convergence} {Theorem} in {Metric} {Spaces}},
     journal = {Journal of convex analysis},
     pages = {1013--1024},
     publisher = {mathdoc},
     volume = {20},
     number = {4},
     year = {2013},
     url = {http://geodesic.mathdoc.fr/item/JCA_2013_20_4_JCA_2013_20_4_a7/}
}