@article{10_4064_fm121_1_2016,
     author = {Ehrhard Behrends},
     title = {Where is pointwise multiplication in real $CK$-spaces locally open?},
     journal = {Fundamenta Mathematicae},
     pages = {51--69},
     publisher = {mathdoc},
     volume = {236},
     number = {1},
     year = {2017},
     doi = {10.4064/fm121-1-2016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm121-1-2016/}
}