@article{10_4064_fm_59_1_71_72,
     author = {Alexander Abian and David Deever},
     title = {A short proof of a strong version of {Popru\.zenko's} {Theorem}},
     journal = {Fundamenta Mathematicae},
     pages = {71--72},
     publisher = {mathdoc},
     volume = {59},
     number = {1},
     year = {1966},
     doi = {10.4064/fm-59-1-71-72},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-59-1-71-72/}
}