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@article{10_4064_cm_17_2_269_276, author = {B. W\k{e}glorz}, title = {Some preservation theorems}, journal = {Colloquium Mathematicum}, pages = {269--276}, publisher = {mathdoc}, volume = {17}, number = {2}, year = {1967}, doi = {10.4064/cm-17-2-269-276}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-17-2-269-276/} }
B. Węglorz. Some preservation theorems. Colloquium Mathematicum, Tome 17 (1967) no. 2, pp. 269-276. doi : 10.4064/cm-17-2-269-276. http://geodesic.mathdoc.fr/articles/10.4064/cm-17-2-269-276/
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