@article{10_4064_sm_47_2_153_159,
     author = {Ed Dubinsky and W. Robinson},
     title = {A characterization of \ensuremath{\omega} by block extensions},
     journal = {Studia Mathematica},
     pages = {153--159},
     publisher = {mathdoc},
     volume = {47},
     number = {2},
     year = {1973},
     doi = {10.4064/sm-47-2-153-159},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-47-2-153-159/}
}