@article{10_4064_cm_43_2_251_260,
     author = {B. S. Spahn},
     title = {On topologies generating the {Effros} {Borel} structure and on the {Effros} measurability of the boundary operation},
     journal = {Colloquium Mathematicum},
     pages = {251--260},
     publisher = {mathdoc},
     volume = {43},
     number = {2},
     year = {1980},
     doi = {10.4064/cm-43-2-251-260},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-43-2-251-260/}
}